THE LEGEND SERIES

MODEL LGD INSTRUCTION MANUAL

INTRODUCTIONThe Legend Series LGD is another unit in our multi-purpose series of industrial

control products that are field-programmable for solving various applications. This series of products is built around the concept that the end user has the capability to program different personalities and functions into the unit in order to adapt to different indication and control requirements.

The Legend unit LGD, which you have purchased, has the same high quality workmanship and advanced technological capabilities that have made Red Lion Controls the leader in today’s industrial market.

Red Lion Controls has a complete line of industrial indication and control equipment, and we look forward to servicing you now and in the future.

CAUTION: Risk of Danger. Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

Table of ContentsGENERAL DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4

Block Diagram · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4Safety Summary · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5Basic Operation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5Overflow Indication · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6Inhibit · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6Peak & Valley · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6Normal Operating Mode · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6Front Panel Description · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7

Keypad Functions · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7Front Panel Accessible Functions With Program Disable · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 8

PROGRAMMING GENERAL DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 9Program Presets & Counter Load Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 10Program Scale Factors Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 11

PROGRAMMING MENUS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 12Programming Scaling Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13

Count Scale Factor (COUNT SF) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13Rate Scale Factor (RATE SF) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13Count Scale Multiplier (CNT. SCM) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 13Rate Scale Multiplier (RATE SCM) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 14Rate Conversion Factor (RATE PER) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 14Decimal Point (DP) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 14

Programming Rate Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 15Program Counter Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16

Count Modes · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 16Reset Action · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 17Automatic Reset · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 17

Program User Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 18No Mode · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Maintained Reset (MNT RST) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Momentary Reset (MOM RST) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Reset Output (RST OUT) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19

-1-

Set Output (SET OUT) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19View/Freeze Display (VIEW DS1) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Change Display (CHG DSP) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Counter Load (CNT LD) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Print Request (PRINT RQ) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 19Skip Preset 1 (SKIP P1) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 20Program Disable (PGM. DIS.) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 20

Program Outputs Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 20Phase · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 20Timed, Latched, Or Boundary · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 21Output End (Reset) Modes · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 21Output Power Up State (OFF @ P.UP OR SAVE @ P.DN) · · · · · · · · · · · · · · · · · · · · · · · · · · · · 21Reset Output With Count (RST/C-EN OR DS) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 21

Program Display Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 22Displays 1 - 4 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 22Scroll Speed (SCRO.SPD) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 22

Program Communication Port Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 23Baud Rate · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 23Parity · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 23Unit Address · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 23Serial Transmit Delay · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 23

Program Print Options Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 24Program Options Module · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 25

Operator Access · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 25Preset Tracking · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 25User Settings · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 25LGD Factory Settings · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 26LGD User Settings Chart · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 27

RS485 SERIAL COMMUNICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 29Programming Software · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 29

Installing Software · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 29Using Software · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 29

Communication Format · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 30Sending Commands And Data · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 30

-2-

Receiving Data · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 32Serial Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 33

Connecting To A Host Terminal · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 34Troubleshooting Serial Communications · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 35

INSTALLATION & CONNECTIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 36Installation Environment · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 36EMC Installation Guidelines · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 37Wiring Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 37

A.C. Power Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38DC Power Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38

Serial Communications · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38User Input Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38Output Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38

Relay Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38Signal Wiring · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38

Inputs A & B · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 38Installation & Removal Of Optional Relay Board · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 40DIP Switch Set-Up · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 40Various Sensor Output Connections · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 41

SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 43TROUBLESHOOTING GUIDE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 45APPENDIX “A” - SCALING FOR COUNT INDICATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 48

Count Scale Multiplier · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 49Counter Scaling Example: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 49

APPENDIX “B” - SCALING FOR RATE INDICATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 51Rate Scale Multiplier · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 52Rate Scaling Example: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 52

APPENDIX “C” - APPLICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 54APPENDIX “D” - ORDERING INFORMATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 56APPENDIX “E” - FLOWCHART FOLD-OUT · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · (Insert)

-3-

GENERAL DESCRIPTIONThe Legend unit (LGD) is a two input,

microprocessor-based device that offers thefeatures and performance of a dual levelpreset Counter and time interval Rateindicator. The internal count precision ismaintained to 9 digits.

The RS485 serial communication portprovides for computer and printer interfacethat extends the capabilities of the unit. It canbe used for data re t rieval and forprogramming various data values.

Optional Legend Programming Software(SFLGP) for IBM

® compatible PCs is

available to program all of the Legendconfiguration parameters, such as UserInputs, Count modes, etc. The softwareallows unit configurations to be created,uploaded, downloaded, and saved to a file forrapid programming of the Legend unit.

Application flexibility is provided through the two-line by eight-character alphanumeric display. The display features Englishlanguage menus for easy viewing andsimplif ied programming. The fourscroll-through indication displays can beprogrammed to show various parameters andto automatically scroll, if desired. A programdisable DIP switch used with an externalUser Input can be utilized to protect thesettings and guarantee that no unwantedchanges occur during operation.

The five Programmable User Inputs can beset for a variety of functions. Three user inputs are located on the upper rearterminal block and the other two inputs are front panel function keys.

When power is turned off, the unit automatically saves the settings and datain its no-power memory. When power is restored, the LGD restores the

parameters it had at power down. The EPROM’s life expectancy is at least100,000 power cycles.

The LGD offers a choice of seven programmable counting modes for use in applications requiring Bi-directional, Anti-coincidence, and Quadraturecounting. A separate Inhibit terminal can be used for any of the count modes.

-4-

BLOCK DIAGRAM

Input A accepts a signal for the Count and Rate display. Input B accepts asignal for the Count display or direction control. In the Anti-coincidencemode, both inputs are monitored simultaneously, so that no counts are lost,and the final count can be chosen as the sum or difference of the two inputs.

Rate and Count displays have separate scaling and decimal pointplacement, for the readouts in different units.

The Counter Load feature enables the operator to modify the count valueunder circumstances that occur when flawed material has been counted and itis necessary to adjust the count value accordingly.

The rate operates in the time interval method (1/tau) to calculate the ratevalue. This method insures high resolution at all input rates. Averaging can be accomplished by programming the Minimum and Maximum Update Time forthe desired response. Extensive scaling capabilities allow practically anyreading at very slow input rates.

Each of the two open collector outputs can be assigned to either theCounter or Rate indicator. The programmable outputs can be set for a varietyof functions. The optional plug-in relay board operates in parallel with theopen collector outputs and makes it easy to field upgrade the Legend unit toprovide for two, 5 amp, 240 VAC relay outputs.

The construction of the Legend LGD unit is a lightweight, high impactplastic case with a clear viewing window. The sealed front panel with thesilicone rubber keypad meets NEMA 4X/IP65 specifications for wash-downand/or dusty environments, when properly installed. Plug-in style terminalblocks simplify installation and wiring change-outs.

SAFETY SUMMARYAll safety related regulations, local codes and instructions that appear in

the manual or on equipment must be observed to ensure personal safety and toprevent damage to either the instrument or equipment connected to it. Ifequipment is used in a manner not specified by the manufacturer, theprotection provided by the equipment may be impaired.

Do not use this unit to directly command motors, valves, or other actuatorsnot equipped with safeguards. To do so, can be potentially harmful to personsor equipment in the event of a fault to the unit.

BASIC OPERATIONThe Legend has a counter that keeps track of the input pulse Count. The unit

takes the actual number of pulses counted (internal count value) and multipliesthem by the Count Scale Factor and Count Scale Multiplier. This results in thedesired reading value for the count display. The unit can count on both edges ofthe pulse if desired. Input A accepts the signal for the count and Input B is usedfor quadrature or anti-coincidence counting, or to control up or down counting.There is a separate Inhibit terminal that can be used with any of the count modes.

The Counter has three Reset Action modes associated with the display;Reset to Zero (up-count modes), Reset to Preset (down-count modes), orReset to the Counter Load value. A Reset can be a Manual reset, using aprogrammable user input, or it can be one of the seven programmableAutomatic Reset modes. Both the reset action and automatic reset modes areprogrammed in the Program Counter Module.

The Counter will display the scaled number of pulses that have beenentered. When the count equals either preset 1 or 2, the appropriate outputwill activate. The count can be programmed to automatically reset if desired.The internal precision of the Counter is maintained to 9 digits.

The signal at Input A is also used for the Rate indicator portion. The RateIndicator uses a time interval method (1/tau) to calculate the rate value. Theunit counts on the negative edge of the input pulses. After the programmedminimum update time elapses and the next negative edge occurs, the unitsaves the number of edges that occurred during the elapsed time. The numberof edges is multiplied by the Rate Scale Factor, Rate Scale Multiplier, and theRate Conversion Factor to calculate the rate value. Averaging can beaccomplished by programming the Rate Minimum Update Time for thedesired response. Extensive scaling capabilities allow practically any desired reading at very slow count rates.

-5-

The following is a Block Diagram overview of the basic operation.

OVERFLOW INDICATIONThe Legend will flash the word “OVERFLOW” in the appropriate display

when an overflow condition occurs. An overflow occurs if the capacity of thedisplay (6-digits) is exceeded or if the internal count capacity (9-digits) isexceeded. The use of an extremely small Scale Multiplier and a Scale FactorValue can cause the internal count capacity to overflow before the displayedvalue will overflow.

For example, if a Scale Factor of 0.0001 and a Scale Multiplier of 0.001 isused, for every 10,000,000 count edges received, the display will incrementby 1. Before the display reaches 215, the internal counter will overflow.When the capacity of the display is exceeded, the count value will bemaintained and will be valid. But if the internal count capacity is exceeded,then this value will no longer be valid. It should be noted that the use of aScale Factor larger than “1” could cause the displayed count value tooverflow before 999,999 counts are accumulated. Also the use of a Rate Scale Factor, Scale Multiplier, and Rate Conversion Factor larger than “1” cancause the rate display to be in an overflow condition.

The Counter should not be allowed to operate in an overflow condition. Assoon as, or before the counter overflows, the information should be recordedand the counter reset.

INHIBITWhen the Inhibit terminal is low, connected to common, all input pulses will

be ignored by the counter. The rate input, however, is unaffected by the Inhibitterminal and will continue to indicate the rate of the signal at input A. When theInhibit terminal is high, the signal for the counter will be sensed and counted.

PEAK & VALLEYThe Peak and Valley registers will record the lowest (Valley) and the

highest (Peak) readings of the rate input signal. These values are viewed inthe indication display loop and are updated automatically. A User Input canbe programmed to reset the values to the current rate value individually or bysending the proper command via the serial communication port. The Peak and Valley values are NOT retained when power to the unit is removed.

NORMAL OPERATING MODEIn the normal operating mode, the up, down, left, and right arrow keys are

used to scroll through the main display loop. In the main display loop, the four indication displays, scale factor, and program mode module are viewed, asshown. In the indication display loop, the up and down arrow keys are used toscroll to each display. The indication displays are referenced as 1 (RATE), 2(PEAK), 3 (VALLEY), and 4 (COUNT), and are the factory default settings.The indication displays can be programmed to show other parameters andautomatically scroll if desired (Refer to the Program Displays Module).When exiting the indication display loop, using the left or right arrow keys,the last display that was viewed will be the first display to be viewed whenre-entering the indication display loop. Also, the last indication display thatwas viewed at power down, will be the one viewed on power up.

The Presets and Counter Load values are accessed from any of the indication displays or from the programming loop. The Count and Rate scale factors areaccessed from the Scale Factors display or when in the programming loop fromthe Program Scaling module. In the Program Mode display, the operator entersthe programming loop to access all parameters to configure the unit.

-6-

Shown below is the Main Display Loop. FRONT PANEL DESCRIPTIONThe front panel has a clear viewing window to view the two line by eight

character LCD display, with yellow/green or red backlighting. The frontpanel meets NEMA 4X/IP65 requirements when properly installed. Thekeypad has a key array of two rows by four columns and some keys have adual function. The following is a description of each key:

KEYPAD FUNCTIONS

-7-

- Function key F1 is a User Programmable Input. When the key ispressed, the unit performs the appropriate function as programmedin the “Program User Module”.

- Function key F2/RST is a User Programmable Input. When the key ispressed, the unit performs the appropriate function, as programmedin the “Program User Module”. The “RST” printing on this key isused as a quick reference for the operator, as long as the function key is programmed for a reset function.

- The PRS key accesses the Preset and Counter Load Module providedthese values are not programmed for ‘loc’k. If all values are ‘loc’ked,pressing the PRS key does nothing. Preset values that are accessible(changeable), can be changed immediately. Within the preset menu,pressing this key saves the value and advances the display to the nextavailable preset. Pressing the PRS key at the end of the module exitsthe module and returns the user to the main display loop.

- The Left arrow/escape key scrolls to the left in the main display loop.When programming a numerical value, it selects the digit to the left.In a sub-menu, it will exit to the next higher level menu in the loop. Itis also used to exit the programming loop. When exiting theprogramming loop, the Legend will store all the parameters intononvolatile memory and return to the last viewed indication display.

F1

F2RST

PRS

<ESC

KEYPAD FUNCTIONS (Cont’d) FRONT PANEL ACCESSIBLE FUNCTIONS WITH PROGRAM DISABLE

The Legend has several ways to limit the programming of parameters fromthe front panel keypad. There is an Operator Access module, in theprogramming loop, that is used with the Program Disable (PGM DIS) DIPswitch and an external programmable User Input. Only one external UserInput can be selected for program disable. The following list describes thepossible program disabling functions.

PGM.DIS.DIP Switch

ProgrammedUser Input

Description

OFF Inactive All programming enabled.

OFF Active Operator Accessible Functions Enabled,Program Loop Disabled.

ON Inactive Operator Accessible Functions Enabled,Program Loop Disabled.

ON Active Operator Accessible Functions Disabled,Program Loop Disabled.

Note: If the User Input, set for PGM. DIS., is to be changed to another function,make sure the User Input is not low (active). If it is low and the mode ischanged, the Program Disable modes will operate as if a PGM. DIS UserInput were active.

-8-

- The Up arrow key scrolls through the indication displays. In theprogramming loop, this key can be used to scroll through the mainmenus. When programming a numerical value, i t increments(decrements, i.e., goes more positive, for negative values) at theselected digit position. If the key is pushed and held, the value willscroll (count up) automatically. After 5 counts, the unit enters fast scroll mode. If the key remains pushed, a digit shift occurs every one hundredcounts until the maximum value or zero (for negative presets) isreached. When the digit shift occurs, the previously scrolling digit goesto zero. When zero is reached (for negative values), the display holds atzero. To go positive, the key must be released and pushed again.

- The Down arrow key scrolls through the indication displays. In theprogramming loop, it scrolls through the main menus and sub menus.When programming a numerical value, it decrements (increments orgoes more negative, for negative values) at the selected digit position.If the key is pushed and held, the value will auto scroll (count downautomatically). After 5 counts, the unit enters fast scroll mode. If thekey remains pushed, a digit shift occurs every one hundred countsuntil zero is reached. When the digit shift occurs, the previouslyscrolling digit goes to zero. When zero is reached, the display holds atzero. To go negative, the key must be released and pushed again.

- The Enter key enters the programming loop, when “Program Mode” isdisplayed from the main display loop. When “Scale Factors” isdisplayed, pressing Enter allows access to the scale factors. This keyis also used to save changes to data values. If the data value is a presetor counter load value, the value is entered and the preset menu isexited. For all other numeric data values (i.e., Output time, Rateupdate times, etc.), the value is entered and the value edit mode isexited. The value is still viewed in the display, but with no digitsflashing.

- The Select/Right arrow key scrolls right in the main display loop.When programming a numerical value, it selects the digit to the right.In a sub-menu loop, it is used to go to the next lower level andeventually into an edit menu.

^

v

ENT

SEL>

PROGRAMMING GENERAL DESCRIPTIONProgramming the LEGEND unit is done through the front panel keypad,

which allows the user to enter into Main Menus, Sub-Menus, and Edit Menus. The English language prompts, the flashing parameters values, and the frontpanel keypad aids the operator during programming.

Although the unit has been programmed at the factory, the parameters willgenerally have to be changed to suit the desired application. From the maindisplay loop, the Main Menus are entered by pressing the enter (ENT) keywhen Program Mode is displayed. This allows the user to then enter aSub-Menu from a main menu where parameter values can be viewed. From theSub-Menu the operator can advance into an Edit Menu. An Edit Menu is wherea parameter value is changed and entered. There are two types of Edit Menus:

1. A Choice Edit Menu allows the operator to scroll through options bypressing the down arrow key until the desired option is viewed. The optionis selected by pressing the ENT (enter) key, which returns the operator tothe previous sub-menu. The operator can exit the Edit Menu WITHOUTmaking a selection by pressing the <ESC key, which will then return theoperator to the previous sub-menu.

2. In a Numerical Value Edit Menu, the operator uses the left or right arrowkey to select a digit. The up and down arrow keys change the digit’s value.The PRS key toggles the left most digit between a minus (-) and a zero forplus (+), for that numeric value. When the appropriate numerical value isselected, it is entered by pressing the ENT (enter) key, which returns theoperator to the previous sub-menu.

All parameter values that are changed in the Programming Loop are savedwhen exiting the loop. The operator can exit the programming loop from anyof the main menus by pressing the <ESC key. When the <ESC key is pressed,the display will blank momentarily, while the parameter values are saved innonvolatile memory. The unit will return to the indication display that waslast viewed. Shown is the Main Display Loop and the Main ProgrammingMenus of the Dual Preset Legend (LGD) unit.

All of the flow charts that follow, which have slanted characters, will beflashing in the units display and will have programmable options.

-9-

PROGRAM PRESETS & COUNTER LOAD MODULEThe Preset and Counter Load values are accessed from any of the

indication displays, or from any of the main menus in the programming loop,by pressing the PRS key. The top line shows the Preset number and thedisplay that it is assigned to (C = Count, R = Rate). The following flowchartshows only the Preset and Counter Load portion:

PRESETS VALUESPreset values P1 and P2 activate solid state outputs 01-SNK & 02-SNK

respectively, when the assigned display value equals the preset value. Theoutput (preset) may be assigned to the count or rate display and the outputaction (Timed, Latched, or Boundary) is programmed in the Program OutputsModule. The preset values may range from -99,999 to 999,999.

Note: The optional relay board operates in parallel with the solid stateoutputs, 01 SNK & 02 SNK.

The Count Scale Factor will have a direct effect on the preset value beingentered if the output (preset) is assigned to the count display. For a Scale FactorValue greater than “1”, the preset value should be a whole number multiple ofthe Scale Factor value. If it is not, the Legend will automatically adjust thepreset value up or down to force it to be evenly divisible by the Scale Factor.

COUNTER LOAD VALUEThe Counter Load value (CL) allows the user to change the count value.

The count display will reset to the counter load value if the reset mode is set tocounter load (In the Program Counter Module). The counter load value canbe programmed from -99999 to 999999.

-10-

PROGRAM SCALE FACTORS MODULEThe Scale Factors are accessed from the Scale Factors Module in the main

display loop or from the Scaling Module in the programming loop.Since the Scale Factors may need to be changed periodically, this module

allows the operator to change a scale factor value WITHOUT entering theprogramming loop. The following flowchart shows only the Scale Factorportion:

COUNT SCALE FACTORThe number of pulses counted (internal count value) is multiplied by the

count scale factor value and the Scale Multiplier to obtain the desired countdisplay value. A Count Scale Factor Value of 1.0000 and a Scale Multiplier of “1” will result in the display of the actual number of input pulses that werecounted. The Count Scale Factor value is used for converting the number ofpulses counted to the required units of measure for the display. This includesconversion from different units of measure (i.e feet to meters, etc.).

The Count Scale Factor Value can range from 0.0001 to 5.9999. It isimportant to note that the precision of a counter application cannot be

improved by using a Scale Factor greater than “1”. To accomplish greaterprecision, more pulse information must be generated per measuring unit. Fordetails, refer to Scaling for Count Indication in the Appendix.

RATE SCALE FACTORThe internal rate value (pulses per second) is multiplied by the Rate Scale

Factor, Rate Scale Multiplier, and Rate Conversion Factor values to obtainthe desired rate display value. The Rate Scale Factor value is used forconverting the internal rate (in pulses per second) to the required units ofmeasure for the display. This includes conversion from different units ofmeasure (i.e feet to meters, etc.).

The Rate Scale Factor Values range from 0.0001 to 5.9999. Due to the way therate is calculated, high resolution and accuracy are achieved at all input rates,slow or fast. For details, refer to Scaling for Rate Indication in the Appendix.

-11-

PROGRAMMING MENUSThe programming menus are accessed when “Program Mode” is displayed

in the main display loop. All parameter values can be accessed from the MainProgramming Menus. Accessibility to the programming menus will dependon the Program Disable Function setting (Refer to Front Panel AccessibleFunctions with Program Disable section).

In the programming menus, pressing the down arrow key will scrollthrough all the main menu options. From the main menu, a sub-menu isaccessed by pressing the SEL> key. In a sub-menu, the operator can view theparameter values that are currently selected. To change a parameter value, the edit menu is accessed by pressing the SEL> key (Refer to ProgrammingGeneral Description section).

The Preset and Counter Load module can be accessed from any mainprogramming menu by pressing the PRS key. When exiting the preset andcounter load module, the operator will return to the last main menu that was being viewed. When all parameter changes have been made, the operator can exit theprogramming loop, from any main menu, by pressing the <ESC key. Exiting willsave all parameter values and return the operator to the last indication displaythat was viewed. Shown are all of the main programming menus.

-12-

PROGRAMMING SCALING MODULEIn the scaling module, the Count and Rate scale factors, scale multipliers,

rate conversion factor, and decimal points are accessed. The followingflowchart shows only the Scaling portion:

COUNT SCALE FACTOR (COUNT SF)The number of pulses counted (internal count value) is multiplied by the

count scale factor value and the count scale multiplier to obtain the desiredcount display value. A count Scale Factor Value of 1.0000 will result in thedisplay of the actual number of input pulses that were counted. The countScale Factor value is used for converting the number of pulses per unit ofmeasure to the required units of measure for the display. This includesconversion from different units of measure (i.e feet to meters, etc.).

The Count Scale Factor Value can range from 0.0001 to 5.9999. It isimportant to note that the precision of a counter application cannot beimproved by using a Scale Factor greater than “1”. To accomplish greaterprecision, more pulse information must be generated per measuring unit. Fordetails, refer to Scaling for Count Indication in the Appendix.

RATE SCALE FACTOR (RATE SF)The internal rate value (pulses per second) is multiplied by the Rate Scale

Factor, Rate Scale Multiplier, and Rate Conversion Factor values to obtainthe desired rate display value. The Rate Scale Factor value is used forconverting the internal rate (in pulses per second) to the required units ofmeasure for the display. This includes conversion from different units ofmeasure (i.e feet to meters, etc.).

The Rate Scale Factor Value can range from 0.0001 to 5.9999. Due to the waythe rate is calculated, high resolution and accuracy are achieved at all input rates,slow or fast. For details, refer to Scaling for Rate Indication in the Appendix.Note: Since the Count and Rate Scale Factors may need to be changed

periodically, they can also be accessed from the Scale Factors module inthe main display loop.

COUNT SCALE MULTIPLIER (CNT. SCM)There are four Count Scale Multipliers available; X 1, X 0.1, X 0.01, or X

0.001 that change the count display value accordingly. The number of pulsescounted (internal count value) is multiplied by the scale multiplier and thescale factor values to obtain the desired Count display.Note: Use of a small scale multiplier with a small scale factor could cause the

internal count value to be exceeded, before the 6-digit display value isexceeded.

-13-

PROGRAMMING SCALING MODULE (Cont’d)

RATE SCALE MULTIPLIER (RATE SCM)The Rate Scale Multiplier is used with the rate scale factor and rate

conversion factor to scale the rate display value for the proper units of measure.The scale multipliers available are; X 1, X 0.1, X 0.01, X 1000, X 100, or X 10.

RATE CONVERSION FACTOR (RATE PER)The Rate Conversion Factor is used to display the rate value in the proper

time units of measure, per second (X1), per minute (X60), or per hour(X3600) for the desired time units for the Rate display.

DECIMAL POINT (DP)There are six Decimal Point locations available for the Rate and Count

displays. The decimal point is programmed individually for the Rate andCount displays. The decimal point location programmed for the Rate displaywill also be the same for the Peak and Valley displays.

-14-

PROGRAMMING RATE MODULEIn the Rate module the Minimum and Maximum Update Times are

programmed. The update times can range from 0.1 to 99.9 seconds. Thefollowing flowchart shows only the Rate portion:

The Rate value calculation uses the method in which the time measuredbetween the first and last pulse is the measurement period. When theminimum update time has expired, the unit will end the measurement periodon the next negative going edge. The unit will count the number of pulses thatoccurred during the measurement period and multiply them by the rate scalefactor, scale multiplier, and rate conversion factor. The result is divided bythe actual measurement period, to obtain the Rate display value. The unit willupdate the rate display at the end of the measurement period. If the unit doesnot receive a negative edge within the maximum update time from the start ofthe measurement period, the unit will end the time period and the rate displaywill go to zero. At very slow count rates the measurement period will be theactual period of one count cycle, as long as the input rate frequency is notlonger than the maximum update time. The rate indicator will only use thefalling edge of the Input A signal.

Note: The minimum update time must be equal or less than 65536 divided bythe maximum operating frequency (in Hz) or the internal rate counter willoverflow. For example, if the maximum operating frequency is 10,000 Hz,the minimum update time must be less than 6.5 sec. (65,535 ÷ 10,000 = 6.5).

-15-

BASIC TIMING DIAGRAMS FOR RATE OPERATION

AVERAGE CYCLE MEASUREMENT

ONE COUNT CYCLE MEASUREMENT

PROGRAM COUNTER MODULEIn the Counter Module, the count mode, reset action, and automatic reset

capability are selected. The following flowchart shows only the Counter portion:

COUNT MODESThere are seven available count modes, which can be used with the

separate external Inhibit terminal. Input A signal is used for count and the rate input. Input B is used in combination with Input A for Count ControlDirection, Quadrature counting, Anti-coincidence Add/Subtract orAnti-coincidence Add/Add counting applications.

CT+DIRX1 (X1 COUNTING WITH DIRECTION)The unit will count one count on every negative edge of the input signal

at Input A. The direction of the count is determined by the logic state ofInput B. A high level at Input B will cause the unit to count in a positivedirection. A low level will cause the unit to count in a negative direction.The rate display is NOT affected by the logic state of Input B.

CT+DIRX2 (X2 COUNTING WITH DIRECTION)The unit will count one count on every negative edge of the input signal

and one count on every positive edge of the input signal at Input A. In thismode, the input signal is effectively doubled. The direction of the count is

determined by the logic state of Input B. A high level at Input B will causethe unit to count in a positive direction. A low level will cause the unit tocount in a negative direction. The rate display is NOT affected by the state ofInput B.

QUAD X1 (QUADRATURE X1)Quadrature counting modes are primarily used in positioning and

anti-jitter applications. The reason this mode works is due to the manner inwhich the two incoming pulses are positioned relative to each other. Thepulse signal on Input B is shifted 90° away from the pulse signal at Input A.These two signals are processed by the Legend as follows:

Input A serves as the count and rate input, while Input B serves asthe quadrature input. For quadrature with single edge counting, thecounter will count in a positive direction when Input A is a negative going edge and Input B is at a low level. The counter will count in anegative direction when Input A is a positive going edge and InputB is at a low level. All transitions on Input A are ignored whenInput B is at a high level. These logic rules provide the basis foranti-jitter operation which will prevent false counts f romoccurring due to back-lash, vibration, chatter, etc.

QUAD X2 (QUADRATURE X2)When two edge counting is used, the quadrature mode works the same as

with single edge counting when Input B is low. But when Input B is a highlevel, counts at Input A are no longer ignored. Instead, the logic rules forInput A are complemented, allowing both edges of Input A to be counted.This doubles the effective resolution of the encoded input.

QUAD X4 (QUADRATURE X4)This mode takes the quadrature mode, with two edge counting, one step

further. In quadrature times 4, both Input A and Input B serve as the countor quadrature input, depending on their state. In one instance, Input A willserve as the count input and Input B will serve as the quadrature input. Inanother instance, Input A will be the quadrature input and Input B will bethe count input. This enables each edge, positive and negative going, ofboth inputs, 1 and 2, to be counted. This results in a resolution four timesgreater than in the basic quadrature X1 mode. As in the other modes, InputA is also used for the rate input.

-16-

ADD/SUB (TWO INPUT ANTI-COINCIDENCE ADD/SUBTRACT)This mode effectively separates count pulses that may simultaneously

appear at the two inputs. The Legend unit processes the count pulses into astring of time-separated pulses, so the internal counter will not lose anycount pulses. Input A serves as the add input (count increments) and InputB serves as the subtract input (count decrements).

ADD/ADD (TWO INPUT ANTI-COINCIDENCE ADD/ADD)This mode effectively sums count pulses that may simultaneously

appear at the two inputs. The Legend unit processes the count pulses into astring of time-separated pulses so the internal counter will not lose anycount pulses. Input A serves as an add input (count increments) and Input B serves as an additional add input (count increments).

RESET ACTIONThe count display can be reset to Zero, Preset 2, or to the Counter Load value.

The method of reset for the display can be automatic or by a user input. The typeof reset from a user input can be a Maintained or Momentary reset (Refer toProgram User Module for details). Automatic reset is covered in the next section.

Note: Response time for a manual reset is 10 msec maximum.

RESET TO ZEROWhen reset, the Counter Display value will return to Zero.

RESET TO PRESET 2When reset, the Counter Display value will return to the Preset 2 value.Output 2 triggers when the count reaches zero.

RESET TO COUNTER LOADWhen reset, the Counter Display value will return to the Counter

Load value.

AUTOMATIC RESETThe Automatic reset mode can be enabled or disabled. The Counter display

will automatically reset to the programmed reset action when one of theautomatic reset modes is selected. A manual reset by a user input will causethe count to reset regardless of the automatic reset mode. The followingchoices are available:

OUT 1 (Reset at Beginning Of Output 1):In this mode, the counter will reset when the count equals the preset 1value. Output 1 can be timed or latched.

OUT 1 END (Reset at End Of Timed Output 1):In this mode, the counter will reset after output 1 has timed out.

OUT 2 (Reset at Beginning Of Output 2):In this mode, the counter will reset when the count equals the preset 2value. Output 2 can be timed or latched.

OUT 2 END (Reset at End Of Timed Output 2):In this mode, the counter will reset after output 2 has timed out.

OUT 1 & 2 (Reset at Beginning Of Output 1 or Output 2):In this mode, the counter will reset when the count equals either preset 1 orpreset 2 value. Outputs 1 and 2 can be Timed or Latched.

OUT 1 & 2E (Reset at End Of Timed Output 1 or Output 2):In this mode, the counter will reset after output 1 or output 2 has timed out.

NOTES

1. For Auto Reset modes, when operating between approximately ½ tomaximum count rate, all other presets should not occur within 1 to 6 countsfollowing the count value at which Auto Reset occurs. In Reset to Zeromodes, with positive preset values, this would apply to preset valuesbetween 0 to 6 counts less than the Preset 2 value (when positive).

2. For Auto Reset at Out2 or Out1 & 2 modes, Output 1 will not activate ifPreset 1 is set to the same value as Preset 2 or Zero (for Reset to Preset orCounter Load mode).

-17-

PROGRAM USER MODULEThere are five User Inputs, three

external User Inputs and two frontpanel Function keys, which have avariety of programmable capabilities.A rear terminal User Input is activewhen tied to common. A front panelfunction key is active when pressed.The prior ity of order for the rearterminal user inputs is USR INP3, USR INP2, and USR INP1 with USR INP3the highest priority. The F2 front panelbutton has the highest priority betweenthe F1 and F2 user input buttons.

The options for each User input arethe same, except the two Function keys(F1 & F2/RST), which DO NOT havethe Program Disable (PGM.DIS.)option. The operator can select onlyone option for each User Input.

Note: The user input must NOT beactive when selecting an option.

In this module, the operator mayhave to enter a second sub-menu forsome options before entering the editmenu. The following flowchart showsonly the User portion:

-18-

NO MODEIf a User Input terminal or a Function key is activated it will be ignored.

MAINTAINED RESET (MNT RST)Maintained reset has four selectable options, in which any or all can be

selected in the edit menu by selecting YES or NO using the UP and DOWNarrow keys. When using the maintained reset with a small preset value, theInhibit input should be used with maintained reset, if the signal is present atthe input when the reset is activated.

RATE: Resets the measurement period. The rate display value will be thelast reading obtained before the reset. The next reading will occur afterthe release of the reset and the expiration of the measurement period.The Rate display will not reset to zero.

PEAK: Resets the peak value to the current rate value.VALLEY: Resets the valley value to the current rate value.COUNT: Resets the count value to the programmed reset action.

With Maintained reset, the value is held reset as long as the UserInput or Function key is active. The unit will start updating theappropriate display when no longer in reset. Maintained reset islevel sensitive and overrides an automatic reset mode.

MOMENTARY RESET (MOM RST)Momentary reset has the same four selectable options as Maintained Reset.

With Momentary reset, the value resets when the user input or function key isactivated. The value will start updating (counting) after the reset action hasoccurred, even if the user input or function key is still active. Momentaryreset is negative edge sensitive and overrides an automatic reset mode.

RESET OUTPUT (RST OUT)The operator can select to have Output 1 and/or Output 2 reset. If the output

is active, it will reset to its inactive state when the user input or function key isactivated. This is a momentary reset.

Note: The inactive state of an output can be ON or OFF depending on whatthe Phase is programmed for in the Program Outputs Module.

SET OUTPUT (SET OUT)The operator can select to have Output 1 and/or Output 2 set. If the output is

inactive, it will go (set) to its active state when the user input or function key is activated. If an output is programmed with a time delay and this user input isactivated, the output will NOT latch, but will time out after the time delayvalue expires. This is a momentary reset.Note: The active state of an output can be ON or OFF depending on what the

Phase is programmed for in the Program Outputs Module.

VIEW/FREEZE DISPLAY (VIEW DS1)When a User Input is activated, an indication display will be viewed and

the numeric value for that display will be held. If the operator is in the maindisplay loop, the unit will advance to the indication display to be viewed. Ifmore than one user input is used for this option, the input with the highestpriority will be the only one that will hold (freeze) the display. Also, it will bethe only input, when activated, that will advance to the indication displayfrom the main display loop. Any other user input programmed, will onlyadvance in the indication display loop. DS1 selects display 1, DS2 display 2,DS3 display 3, and DS4 display 4. The values that are viewed/frozen on thedisplay are determined by what is selected in the Program Displays Module.Note: If an external and a front panel user input are both selected for this

option, the display will be viewed but the numeric value will NOT freezewhen either user input is activated.

CHANGE DISPLAY (CHG DSP)In the indication display loop, when a user input is activated, the indication

display will toggle to the next indication display. The change display is amomentary action.

COUNTER LOAD (CNT LD)When a user input is activated, the count value is reset to the counter load

value regardless of the reset action mode. The counter load is a maintainedaction.

PRINT REQUEST (PRINT RQ)When a user input is activated, the unit transmits all the information

selected in the Print Options Module via the RS485 serial port. The printrequest is a maintained action.

-19-

PROGRAM USER MODULE (Cont’d)SKIP PRESET 1 (SKIP P1)

Output 1 will NOT activate and an automatic reset will NOT occurwhen the count value equals preset 1 if the user input is active. Thismode is typically used with the Automatic Reset at output 1 or output 2mode, or the reset after timed output 1 or 2 mode. The skip preset 1 ismaintained.

PROGRAM DISABLE (PGM. DIS.)Only one external User Input can be used for this option. This option

used with the Program Disable DIP switch can limit operator access toprogrammable parameters (Refer to Operator Accessible Functions With Program Disable section). The program disable is maintained.

PROGRAM OUTPUTS MODULEPresets 1 and 2 activate solid state Outputs 1 and 2 respectively. The

outputs can be assigned to either the Count or Rate display and thepreset values will automatically be assigned to the appropriate display.The relays operate in parallel with the solid state outputs on the optional relay board. A manual reset will override a timed output. If boundary orlatched is selected for the output mode, the time value will not appear asan option.

Program Output 2 has the same programmable options as Output 1,except the “OUT1 END” Sub-menu will be “OUT2 END” and theoptions are: DISABLED, @OUT1, @OUT1END. The followingflowchart shows only the Outputs portion:

PHASEThe positive (+) phase of an output indicates that when the display

value equals the preset value, the output will turn on. When the output is reset it will be turned off.

A minus (-) phase mode refers to the complementing of the logic state of the output. When the display value equals the preset value, the output will turnoff. The reset condition of the output is the on state. When an output ischanged to the other phase it will not take effect until a manual reset or powerdown is performed.

Note: The state of the relay, if used, will be the same as the solid state output.

-20-

TIMED, LATCHED, OR BOUNDARYTimed Mode can be programmed from 0.01 to 99.99 seconds. When the

display value equals the preset value, the output will be active for the timeselected. After the time value expires, the output will return to its inactive state.An output may appear to be latched if the time delay is longer than the timerequired for the counter to reach the preset value. When an output is assigned tothe rate display, the output will appear to be latched, if the output time delay isgreater than the Minimum Update Time. The output will deactivate when therate drops below the preset value and the output time expires.

An output selected for Latch will activate when the display value equalsthe preset value. The output will stay active until it is manually reset by a UserInput selected for that function. When the unit is reset, the output will returnto its inactive state.

An output selected for the Boundary mode will be active when the displayvalue is greater than or equal to the positive preset value. If the display valueis less than the positive preset value, the output will be inactive. For negativepreset values, the output will be active when the count value is less (morenegative) than the negative preset value. The output will be inactive when thedisplay value is greater (more positive) or equal to the negative preset value.If an output is programmed for boundary, the Output End (Reset) Modes willnot be applicable and therefore will not appear in the display.

OUTPUT END (RESET) MODESThe Output End modes operate with a timed or latched output mode. If

either output is selected as boundary and/or rate, the Output End modes willNOT be available.

OUTPUT 1 @ OUT 2 (Output 1 End at Output 2 Start):

Output 1 will reset, return to its inactive state, when output 2becomes active.

@ OUT 2 END (Output 1 End at Timed Output 2 End):Output 1 will reset, return to its inactive state, when output 2’s timedelay expires.

OUTPUT 2 @ OUT 1 (Output 2 End at Output 1 Start):

Output 2 will reset, return to its inactive state, when output 1becomes active.

@ OUT 1 END (Output 2 End at Timed Output 1 End):Output 2 will reset, return to its inactive state, when output 1’s timedelay expires.

OUTPUT POWER UP STATE (OFF @ P.UP OR SAVE @ P.DN)Each output can be programmed individually to have the state of the output

OFF at power up (OFF@P.UP) or saved at power down (SAVE@P.DN). Thesave at power down option will restore the state of the output to what it was atpower down when power is restored. The save at power down option DOESNOT restore a timed output to the active state if the output was active at power down. The OFF at power up option refers to the active state of the output,which is determined by the Output Phase.

RESET OUTPUT WITH COUNT (RST/C-EN OR DS)The Reset with Count Enabled will reset the output when a manual reset of

the Count or Rate display is performed by a user input. If Reset with Count isDisabled, the output will NOT reset when a manual reset is performed on theCount value.

-21-

PROGRAM DISPLAY MODULEEach of the indication displays are programmed individually. Each line of

each indication display can be programmed to show mnemonics (MNE), anumeric value (VAL), output status, a preset value, or the counter load value. If adisplay shows the mnemonic and numeric value of the same parameter, each on aseparate line of the same display the full mnemonic will be displayed as follows:

RATE

PEAK

VALLEY

COUNT

If an indication display is to show two different numeric values, one for eachline, then there will be a single or dual character mnemonic to the left of thenumeric value. This will also be the same if one line is programmed for outputstatus, preset value, or counter load value and the other a numeric value.

DISPLAYS 1 - 4Each line of each display has the same programmable options. MNE is the

abbreviation for Mnemonics and VAL is for value.The following is a list of the single or dual character mnemonics that will

be displayed:

R Indicates the Rate Value.Rp Indicates the Rate Peak Value.Rv Indicates the Rate Valley Value.C Indicates the Counter Value.O-n n Indicates output status:

The block (n) to the left will change to the digit 1 whenoutput 1 is active.The block (n) to the right will change to the digit 2 whenoutput 2 is active.

P1 Indicates Preset 1 Value.P2 Indicates Preset 2 Value.CL Indicates Counter Load Value.

SCROLL SPEED (SCRO.SPD)The indication displays can be set to scroll automatically at a 2.5 or 5

second scroll rate. The displays can be selected not to scroll, in which case theup and down arrow keys are used to scroll through the displays.

The following flowchart shows only the Display portion:

-22-

PROGRAM COMMUNICATION PORT MODULEWhen communicating to a Legend unit via the serial port, the data formats

of both units must be identical. The Baud Rate and Parity Bit are selected forthe data format in this module along with the Unit address and Serial transmitdelay. Serial communication is covered in detail in the RS485 SERIALCOMMUNICATIONS SECTION. The following flowchart shows only theCommunication portion:

BAUD RATEThe Baud Rates available are: 1200, 2400, 4800, and 9600 Baud.

PARITYThe Parity can be ODD, EVEN, or No parity.

UNIT ADDRESSAllows multiple units on a single pair of wires with each unit capable of

having a different address. If only one unit is on the line an address of zero can be used, eliminating the need for an address command. The address numbersrange from 00 to 99.

SERIAL TRANSMIT DELAYThe Serial Transmit Delay is the amount of time the Legend unit will wait

to transmit data to a peripheral unit. The time will begin after the Legendreceives a command to transmit data or when a print request is received. Thedelay can be set for 0.002 or 0.100 second.

-23-

PROGRAM PRINT OPTIONS MODULE

A print operation occurs when a user input, programmed for the printrequest function, is activated or when a “P” command is sent via the serialcommunications port. The unit will transmit the values selected as “YES” inthis module.

When transmitting data, the unit can be programmed to suppress theaddress number, mnemonics, and some spaces by selecting NO for the MNE(mnemonics). A selection of NO results in a faster transmission and may beuseful when interfacing with a computer. However when interfacing with aprinter, sending mnemonics is usually desirable. An example of sending andNOT sending mnemonics are shown below:

6 CNT 123.8<CR><LF>123.8<CR><LF>

If a display is in an overflow condition, an asterisk will precede the digitsthat are printed (ex. positive overflow * 2178, negative overflow *- 2178).

Serial transmissions are covered in detail in the serial communicationssection.

The following flowchart shows only the Print portion:

-24-

PROGRAM OPTIONS MODULEThe Program Options Module is used to enable or disable the Operator

Accessible functions, Preset Tracking selections, or load the Factory settings.The following flowchart shows only the Options portion:

OPERATOR ACCESSThe Operator Access menu is used with the Program Disable DIP switch

and/or an external User Input selected for program disable. Values can be set forYES, NO, or LOC. When a value is selected for NO, the operator can view thevalue, but CANNOT change it from the front panel keypad (See Front PanelAccessible Functions With Program Disable for details). Values selected forLOC do not appear in the displays outside of the programming loop. Thefollowing values can be disabled from front panel access programming:

Preset 1 Counter Load valuePreset 2 Scale Factors

PRESET TRACKINGIf Preset 1 Tracking Preset 2 is enabled, and the Preset 2 value is changed, the

Preset 1 value will also change by the same offset. The amount of offset betweenPreset 1 and Preset 2 is changed by changing the Preset 1 value first. Forexample, if Preset 2 is 100 and it is desired that Preset 1 occurs 20 counts beforePreset 2, the Preset 1 value would be set to 80. If Preset 2 is then changed to 200,Preset 1 will automatically change to 180, maintaining the same 20 count offset.

USER SETTINGSThis module should only be entered if the operator wants to reset ALL

parameters to the factory settings. When the word “FACTORY” is flashing inthe display and the ENT key is pressed, all parameters will be set to the factory settings when exiting the programming loop. The operator can exit thefactory settings option WITHOUT resetting all parameters by pressing the<ESC key. The following are the settings when shipped from the factory,along with a chart for user settings:

CAUTION: If factory settings are selected, all programming by the user will bereset.

-25-

-26-

LGD FACTORY SETTINGS

PRESETS:P1 500P2 1000Counter Load -100

COUNT:Scale Factor 1.0000SCM X1Decimal Point 0Input CT+DIRX1Reset to ZEROAuto Reset DISABLED

RATE:Scale Factor 1.0000SCM X1Decimal Point 0Rate Per SECONDMin. Time 1.0Max. Time 5.0

USER INPUTS:User Input 1 NO MODEUser Input 2 NO MODEUser Input 3 NO MODEUser Key F1 Maintain Reset

RATE NOPEAK YESVALLEY YESCOUNT NO

User Key F2 Maintain ResetRATE NOPEAK NOVALLEY NOCOUNT YES

OUTPUTS: Output 1:

Assigned TO COUNTPhase + PHASEType TIMEDTime Delay 0.1OUT1 END DISABLEDStatus OFF@P.UPReset w/Cnt ENABLED

Output 2:Assigned TO COUNTPhase + PHASEType TIMEDTime Delay 0.1OUT2 END DISABLEDStatus OFF@P.UPReset w/Cnt ENABLED

DISPLAYS: Display 1:

Line 1 RATE-MNELine 2 RATE-VAL

Display 2:Line 1 PEAK-MNELine 2 PEAK-VAL

Display 3:Line 1 VALI-MNELine 2 VALI-VAL

Display 4:Line 1 CNT- MNELine 2 CNT- VAL

Scroll Speed NONE

COMMUNICATIONS:Baud rate 1200Parity ODDAddress 00Xmit Delay 0.100

PRINT OPTIONS:Rate YESPeak NOValley NOCount YESScale Factors NOP1 & P2 NOCounter Load NOMnemonics YES

OPTIONS: Operator Access:

Scale Factors YESP1 YESP2 YESCounter Load YES

Preset Tracking:P1 trac P2 NO

-27-

LGD USER SETTINGS CHART

PRESETS:P1P2Counter Load

COUNT:Scale FactorSCMDecimal PointInputReset toAuto Reset

RATE:Scale FactorSCMDecimal PointRate PerMin. TimeMax. Time

USER INPUTS:User Input

User Input 2

User Input 3

User Key F1

User Key F2

-28-

LGD USER SETTINGS CHART (Cont’d)

OUTPUTS:Assigned

Output 1:PhaseTypeTime DelayOUT1 ENDStatusReset w/Cnt

Output 2:AssignedPhaseTypeTime DelayOUT2 ENDStatusReset w/Cnt

DISPLAYS: Display 1:

Line 1Line 2

Display 2:Line 1Line 2

Display 3:Line 1Line 2

Display 4:Line 1Line 2

Scroll Speed

COMMUNICATIONS:Baud rateParityAddressXmit Delay

PRINT OPTIONS:RatePeakValleyCountScale FactorsP1 & P2Counter LoadMnemonics

OPTIONS: Operator Access:

Scale FactorsP1P2Counter Load

Preset Tracking:P1 trac P2

RS485 SERIAL COMMUNICATIONSRS485 communications allows for transmitting and receiving of data over

a single pair of wires. This feature can be used for monitoring various values,resetting output(s), and changing values, all from a remote location. Typicaldevices that are connected to a Legend unit are a printer, a terminal, aprogrammable controller, or a host computer.

The RS485 differential (balanced) design has good noise immunity andallows for communication distances of up to 4000 feet. Up to 32 units to beconnected on a pair of wires. The unit’s address can be programmed from 00to 99. An Optional RLC Serial Converter Module (RS422 to 20 mA currentloop) can be installed to expand the unit’s flexibility.

PROGRAMMING SOFTWARESoftware for IBM

® compatible PCs is available to program all of the

Legend configuration parameters such as User Inputs, count modes, etc. Thesoftware allows unit configurations to be created, uploaded, downloaded,and saved to a file for rapid programming of the Legend. Before using theprogramming software, the Legend unit should be powered up and theversion number recorded. This information is needed to take full advantage of the programming software capabilities.Note: While using the Legend Programming Software, the Legend unit

should NOT be controlling a process. If the unit is connected whileuploading or downloading the configuration files, unit operation will beinterrupted and counts will be missed.

MINIMUM REQUIREMENTS: IBM® compatible 286 or better.Minimum of 450 K FREE conventional memory.MSDOS 3.3 or later.RS232 or RS485 serial port with ID of COM1 or COM2.Video TEXT mode of 80 columns x 25 rows.Mouse supported.

INSTALLING SOFTWAREA backup copy should be made of the program disk. The program may be

run using the floppy drive, or it may be installed to a Hard drive. To install onthe hard drive, copy all files from the program disk to the desire directory onthe hard drive.

Refer to the “SERIAL CONNECTIONS” section of the manual forconnecting the Legend unit to a computer.

USING SOFTWARETo start the Legend Programming Software (SFLGP) switch to the

disk/directory that contains the Software. Type SFLGP and press ENTER.The software will display an opening screen that displays the current versionof the Legend Programming Software. Press ENTER to proceed to the mainediting screen. The screen is divided into four areas. The top of the screencontains a pull-down menu that allows actions such as uploading anddownloading of a file. The bottom of the screen displays an alternate methodof accessing the pull-down menu selections by using the F1-F8 keys incombination with the ALT key. The middle section displays the programming parameters of the current file and model of Legend. Below the pull-downmenu is the file status information that indicates the current file name, modeland available message/mnemonic memory available. Multiple pages are usedto display all of the programming parameters. To change the page displayedpress PGUP/PGDN or use the mouse to click on the arrows located at theupper and lower right of the screen.

Uploading/Downloading of files from the Legend requires that the BaudRate and Unit Address of both the Legend and the SFLGP be identical. Priorto performing either an upload or a download, a menu of the current PCcommunications settings will be displayed. These settings may be modifiedbefore proceeding with the intended action. Once the action is started, theLegend will display “TX’ING PROGRAM” if uploading or “RX’INGPROGRAM” if downloading. Uploading is file transfer from the LEGEND to the PC and Downloading is file transfer from the PC to the Legend.

-29-

COMMUNICATION FORMATThe half-duplex communication operation sends data by switching voltage

levels on the common pair of wires. Data is received by monitoring the levelsand interpreting the codes that were transmitted. After the Legend receives aTransmit Command or Print Request, it will wait the Serial Transmit Delaytime before it will begin transmitting data. The serial transmit delay can beprogrammed for 0.002 or 0.100 second. In order for data to be interpretedcorrectly, there must be identical formats and baud rates between thecommunicating devices. The formats available for the Legend unit are 1 startbit, 7 data bits, No parity (Parity Bit = 0) or 1 parity bit (odd or even) and 1 stop bit. The baud rates are programmable and the choices are; 1200, 2400, 4800,or 9600 baud.

Before serial communication can take place, the unit must be programmedto the same baud rate and parity as the connected equipment. In addition, theloop address number and print options should be known. When used with aterminal or host computer and only one unit is employed, an address of zero(00) may by used to eliminate the requirement for the address specifier whensending a command. If more than one unit is on the line, assignment of uniquenon-zero addresses is required.

SENDING COMMANDS AND DATAWhen sending commands to the Legend unit, a command string must be

constructed. The command string may consist of command codes, valueidentifiers, and numerical data. Below is a list of commands and valueidentifiers that are used when communicating with the LGD unit.

COMMAND DESCRIPTIONN (4EH) Address command; Followed by a one or two digit address

number 1-99.P (50H) Transmit print options command; Transmits the options

selected in the Program Options Module section.R (52H) Reset value command; Followed by one Value Identifier (E, I,

J, O, 1, or 2).T (54H) Transmit value command; Followed by one Value Identifier

(A-O).V (56H) Change value command; Followed by one Value Identifier

(A-E, or O), then the proper numerical data.

VALUE IDENTIFIERS MNEMONICA (41H) PRESET 1 P1B (42H) PRESET 2 P2C (43H) SCALE FACTOR COUNT SFCD (44H) SCALE FACTOR RATE SFRE (45H) COUNT CNTH (48H) RATE RTI (49H) PEAK PEKJ (4AH) VALLEY VALO (4EH) COUNTER LOAD CLD1 (31H) OUTPUT 1 N/A2 (32H) OUTPUT 2 N/A

Note: Command identifiers other than those listed should NOT be transmitted.Otherwise, undefined or unpredictable operation could result.The command string is constructed by using a command, a value identifier,

and a data value if required. The Data value need not contain the decimal pointsince it is fixed within the Legend unit, when programmed at the front panel. TheLegend will accept the decimal point, however, it does not interpret them in anyway. Leading zeros can be eliminated, but all trailing zeros must be present.

-30-

10 BIT DATA FORMAT10 BIT DATA FORMAT

EXAMPLE: If a Scale Factor of 1.0000 is to be sent, the data value can betransmitted as 1.0000 or 10000. If a “1” is transmitted, the Scale Factor will be changed to 0.0001.

The Address command is used to allow a command to be directed to aspecific unit on the Serial Communications Line. When the unit address iszero, transmission of the Address command is not required. This is done forapplications that do not require more than one Legend. For applications thatrequire several units, each Legend on the line must be given a non-zeroaddress. If they are given the same address, a command such as the TransmitValue Command, will cause all the units to respond simultaneously, resultingin a communication collision. All Legends in a multiple unit applicationshould be given an address other than zero. If a unit has an address of zero, itwill attempt to process any transmissions from the other Legends ascommands. These transmissions fill up the receive buffer of the unit with anaddress of zero, which may produce unpredictable results.

In a multiple unit configuration an asterisk must be sent to clear the inputbuffer of all units on the line after a transmit value or print request commandis sent to a specific unit on the line.

The Legend will require a maximum of 50 msec to process the asterisk (*).The command string is constructed in a specific logical sequence. The

Legend will not accept command strings that do not follow this sequence.Only one operation can be performed per command string. Below is theprocedure to be used when constructing a command string.

1. The first two or three characters of the command string must consist of theAddress Command (N) and the address number of the unit (1-99). If theLegend address is zero, the address command and number need NOT be sent.

2. The next character in the command string is the actual command that theLegend is to perform (P, R, T, or V).

3. A Value Identifier is next if it pertains to the command. The command P(print) does not require a Value Identifier.

4. The numerical data will be next in the command string if the “ChangeValue” command is used.

5. All command strings must be terminated with an asterisk * (2AH). Thischaracter indicates to the Legend that the command string is complete andbegins processing the command.

Below are some typical examples of properly constructed command strings.

(EX. 1) Change Preset 1 Value to 123.4 on the Legend with an address of 2.

COMMAND STRING: N2VA1234*

(EX. 2) Transmit the Count Value of the Legend unit with an address of 3.

COMMAND STRING: N3TE*

(EX. 3) Reset Output 1 of the Legend unit with an address of 0.

COMMAND STRING: R1*

If illegal commands or characters are sent to the Legend, the unit willrespond by transmitting an error character “E” (45H) in which case the stringmust be re-transmitted.

When writing application programs in Basic, the transmission of spaces orcarriage return and line feed should be inhibited by using the semicolondelimiter with the “PRINT” statement. The Legend will not accept a carriagereturn or line feed as valid characters.

-31-

SENDING COMMANDS AND DATA (Cont’d)It is recommended that a “Transmit Value” command follow a “Change

Value” Command. If this is done, the reception of the data can provide atiming reference for sending another command and will insure that thechange has occurred. When a “Change Value or Reset Value” command issent to the Legend, there is time required for the unit to process the commandstring. The diagrams show the timing considerations that need to be made.

RECEIVING DATAData is transmitted from the Legend when a “T” Transmit Value or a “P”

Transmit Print Options command is sent to the Legend via the serial port orwhen a User Input, programmed for the Print Request function, is activated.The Legend will wait until the serial transmit delay (0.100 or 0.002 sec) timeexpires and then begin transmissions. The Legend can be programmed totransmit Mnemonics. The format for a typical transmission string withmnemonics is shown below:

The first two digits transmitted are the unit address followed by one blankspace. If the unit address is 0, the first locations will be left blank. The nextthree characters are the mnemonics followed by one or more blank spaces.The numerical data value is transmitted next. Negative values are indicatedby a “-” sign. If the numeric value is in an Overflow condition an asterisk (*)will precede the most significant digit of the value. The decimal pointposition will “float” within the data field depending on the actual value itrepresents. The numeric data is right justified without leading zeros.

When a “T” command or print request is issued, the above character stringis sent for each line of a block transmission. An extra < SP> < CR> < LF> istransmitted following the last line of transmission from a print request toprovide separation between print outs.

If Mnemonics are NOT transmitted, just numeric data is sent with no built-intime delay. If the Legend transmits Mnemonics, there is a 400 msec built-in timedelay after each transmission string. When interfacing to a printer, sendingMnemonics are usually desirable. Examples of transmissions are shown below:

3 CNT -6732.5< CR> < LF> (400 msec delay) Mnemonics Sent -6732.5< CR> < LF> NO Mnemonics Sent

-32-

CONNECTING TO AN RLC PRINTER

The various Print Options are used with a printer or a Computer Terminal.They provide a choice of which Legend data values are to be printed, wheneither the User Input, programmed for the print request function is activated,or a “P” (Transmit Print Options) command is sent to the Legend via the serial port. The Print Options are programmed in the “Program Print Options”module, the available options are:

A. Print Rate Value.B. Print Peak Value.C. Print Valley Value.D. Print Count Value.E. Print Scale Factors (Count & Rate) Values.F. Print Presets 1 & 2 Values.G. Print Counter Load Value.H. Print Mnemonics for all Values.

A print out from a Legend unit with an address of 1 and all print optionsselected is shown below:

1 RT 541 PEK 1001 VAL 01 CNT 40001 SFC 1.00001 SFR 1.00001 P1 5001 P2 10001 CLD -100

When using this program, the Serial Transmit Delay should be set to 0.100seconds.

SERIAL CONNECTIONSWhen wiring, remove the 12-position terminal block, which is the top

board at the rear of the unit. Refer to the numbers listed on the top label withthe terminal description for installing each wire in its proper location.

The two data (transceiver) wires connect to the TX/RX (+) and TX/RX (-)terminals. It is recommended that shielded (screened) cable be used for serialcommunications. This unit meets the EMC specifications using Alpha #2404cable or equivalent. There are higher grades of shielded cable, such as, fourconductor twisted pair, that offer an even higher degree of noise immunity.

In some applications a signal ground may be required to establish a groundreference. The signal ground is required if the equipment does not haveinternal bias resistors connected to the RS485 transceiver lines. The signalground is connected from only one legend to the RS485 equipment. Ifnecessary the shield can be used as the signal ground.

When all connections are made, replace the terminal block into its properlocation.

TERMINAL DESCRIPTIONSCOMM. - Common required for some applications.TX/RX (+) & TX/RX (-) - The Legend transmits and receives on these two

terminals which are connected to the external device.TX EN. - Used primarily to connect Legends in a 20 mA communication loop

with other units.

-33-

SERIAL CONNECTIONS (Cont’d)

-34-

CONNECTING TO A HOST TERMINAL

Six Legend units are used to monitor and controlparts packaging machines in a plant. Legend units arelocated at each machine in the production area of thebuilding. A communication line is run to an Industrialcomputer located in the production office. The drawing shows the l ine connect ion. Each Legend isprogrammed for a different address and are al lprogrammed for the same baud rate and parity as thecomputer (ex 9600 baud, parity even). An applicationprogram is written to send and receive data from theunits using the proper commands.

TROUBLESHOOTING SERIAL COMMUNICATIONSIf problems are encountered when interfacing the Legend(s) and host

device or printer, the following check list can be used to help find a solution.

1. Check all wiring. Refer to the previous application examples and use themas a guide to check your serial communication wiring. Proper polarity of all Legend(s) and other peripherals must be observed.

2. If the Legend is connected to a “host computer”, device or printer, check tomake sure that the computer or device is configured with the samecommunication format as the Legend. The communication format theLegend will accept is; 1 start bit, 7 data bits, no parity or 1 parity bit (odd oreven), and 1 stop bit.

3. Check the baud rate and parity in the Program Communication Module andmake sure all devices on the line are set to the same baud rate and parity.

4. Check the Legend’s unit address. If the Address command is not used whentransmitting a command to the Legend, the Legend’s address must be set to0. See “Sending Commands & Data” section for command structure.

5. If two-way communications are to be established between the Legend and a computer, have the computer receive transmissions from the Legend first.Activating a User Input, programmed for the print request function, willinitiate transmissions from the Legend.

6. When sending commands to the Legend, an asterisk * (2Ah) must terminatethe command. NO CARRIAGE RETURNS (0Dh) OR LINE FEED (0Ah)CHARACTERS SHOULD BE SENT TO THE LEGEND. If they are sent,the Legend will respond by transmitting an “E”.

7. In multiple unit configurations, make sure each unit has a different addressother than zero. If a transmit value or Print Request command is issued, anasterisk (*) must be sent before sending another transmission.

8. If all the above has been done, try reversing the polarity of the transceiverwires between the Legend(s) and the RS485 interface card. Some cardshave the polarity reversed.

9. A twisted pair with a signal ground may be needed in some applications toestablish a ground reference. The signal ground is required if theequipment does not have internal bias resistors connected to the RS485transceiver lines. The signal ground is connected from only one legend tothe RS485 equipment.

-35-

CONNECTING TO A HOST TERMINAL

Six Legend units are used to monitor and control parts packagingmachines in a plant. Legend units are located at each machine in theproduction area of the building. A communication line is run to anIndustrial computer located in the production office. The drawing showsthe line connection. Each Legend is programmed for a different addressand are all programmed for the same baud rate and parity as the computer(ex 9600 baud, parity even). An application program is written to send and

-36-

INSTALLATION & CONNECTIONS

INSTALLATION ENVIRONMENTThe unit should be installed in a location that does not exceed the

maximum operating temperature and provides good air circulation. Placingthe unit near devices that generate excessive heat should be avoided.

The bezel should be cleaned only with a soft cloth and neutral soapproduct. Do NOT use solvents. Continuous exposure to direct sunlight mayaccelerate the aging process of the bezel.

Do not use tools of any kind (screwdrivers, pens, pencils, etc.) to operatethe keypad of the unit.

Caution: Only minimum pressure is required to seal panel.Do NOT overtighten screws.

Before installing the Legend into the panel, the user shouldfirst become familiar with the unit. Also, it may be desirable toprogram the unit and set the appropriate DIP switches for theapplication. When programming is complete, all parameters willbe saved in nonvolatile memory. The Program Disable DIP switch used with an external User Input, programmed for the programdisable function, provides various levels of security to preventaccidental or unauthorized programming changes.

The unit meets NEMA 4X/IP65 requirements for indoor usewhen properly installed. The Legend unit is intended to bemounted into an enclosed panel with a gasket to provide awater-tight seal. Two mounting clips and screws are provided foreasy installation. Consideration should be given to the thicknessof the panel. A panel that is too thin may distort and not provide awater-tight seal, therefore, the recommended minimum panelthickness is 1/8" (3.2 mm). The recommended clearance behindthe panel for mounting clip installation is 3.0" (6.45 cm)H x 4.0(10.16 cm)W.

After the panel cut-out is completed and deburred, carefullyapply the gasket to the panel. DO NOT APPLY THE ADHESIVESIDE OF THE GASKET TO THE BEZEL. Insert the unit into thepanel as depicted in the drawing. Thread the screws into the clipsuntil the pointed end just protrudes through the other side. Installeach mounting clip by inserting the case tabs of the clip into theholes, located on either side of the bezel. Then snap the rear end of the clip into the case and slide the clip towards the rear of the unit,locking it in place. Tighten the screws evenly to apply uniformcompression, thus providing a water-tight seal.

EMC INSTALLATION GUIDELINESAlthough Red Lion Controls Products are designed with a high degree of

immunity to Electromagnetic Interference (EMI), proper installation andwiring methods must be followed to ensure compatibility in each application.The type of the electrical noise, source or coupling method into a unit may bedifferent for various installations. Cable length, routing, and shieldtermination are very important and can mean the difference between asuccessful or troublesome installation. Listed are some EMI guidelines for asuccessful installation in an industrial environment.1. A unit should be mounted in a metal enclosure, which is properly connected

to protective earth.2. Use shielded cables for all Signal and Control inputs. The shield

connection should be made as short as possible. The connection point forthe shield depends somewhat upon the application. Listed below are therecommended methods of connecting the shield, in order of theireffectiveness.a. Connect the shield to earth ground (protective earth) at one end where

the unit is mounted.b. Connect the shield to earth ground at both ends of the cable, usually

when the noise source frequency is over 1 MHz.3. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors, feeding motors, solenoids, SCR controls, andheaters, etc. The cables should be run through metal conduit that isproperly grounded. This is especially useful in applications where cableruns are long and portable two-way radios are used in close proximity or ifthe installation is near a commercial radio transmitter. Also, Signal orControl cables within an enclosure should be routed as far away as possible from contactors, control relays, transformers, and other noisy components.

4. Long cable runs are more susceptible to EMI pickup than short cable runs.5. In extremely high EMI environments, the use of external EMI suppression

devices such as Ferrite Suppression Cores for signal and control cables iseffective. The following EMI suppression devices (or equivalent) arerecommended:

Fair-Rite part number 0443167251 (RLC part number FCOR0000)Line Filters for input power cables:

Schaffner # FN2010-1/07 (Red Lion Controls # LFIL0000)6. To protect relay contacts that control inductive loads and to minimize

radiated and conducted noise (EMI), some type of contact protectionnetwork is normally installed across the load, the contacts or both. The

most effective location is across the load.a. Using a snubber, which is a resistor-capacitor (RC) network or metal

oxide varistor (MOV) across an AC inductive load is very effective atreducing EMI and increasing relay contact life.

b. If a DC inductive load (such as a DC relay coil) is controlled by a transistor switch, care must be taken not to exceed the breakdown voltage of thetransistor when the load is switched. One of the most effective ways is toplace a diode across the inductive load. Most RLC products with solidstate outputs have internal zener diode protection. However externaldiode protection at the load is always a good design practice to limit EMI.Although the use of a snubber or varistor could be used.RLC part numbers: Snubber: SNUB0000

Varistor: ILS11500 or ILS230007. Care should be taken when connecting input and output devices to the

instrument. When a separate input and output common is provided, theyshould not be mixed. Therefore a sensor common should NOT beconnected to an output common. This would cause EMI on the sensitiveinput common, which could affect the instrument’s operation.Visit RLC’s web site for more information on EMI guidelines, Safety and

CE issues as they relate to Red Lion Controls products.

WIRING CONNECTIONSThe bottom board has a removable terminal block on the left where the

power connections are made. The optional plug-in relay board also has aremovable terminal block and is located at the bottom right of the unit. Thetop board has a removable terminal block where the signal inputs, user inputs, solid state outputs, and serial communications connections are made. Whenwiring the unit, remove the terminal block and use the numbers on the toplabel to identify the position number with the proper function. All conductorsshould meet voltage and current ratings for each terminal. Also cablingshould conform to appropriate standards of good installation, local codes andregulations. It is recommended that power supplied to the unit (AC or DC) beprotected by a fuse or circuit breaker. Strip the wire, leaving approximately1/4" bare wire exposed (stranded wires should be tinned with solder). Insertthe wire into the terminal and tighten down the screw until the wire is clamped in tightly. Each terminal can accept up to two 18-gage wires. After theterminal block is wired, install it in the proper location at the rear of the unit.Wire each terminal block in this manner.

-37-

A.C. POWER WIRINGThe AC power is connected to the bottom left terminals 1 & 2 marked AC

PWR. The voltage selector switch, located at the side of the unit, is used toselect the proper voltage. The switch is a slide movement type and can be setby using a small screwdriver. If the switch is toward the front of the unit, it isset for 115 VAC input. If the switch is towards the rear of the unit, it is set for230 VAC input. The switch will be in the 230 VAC position when shippedfrom the factory.

Note: Before applying power to the unit make sure the A.C. power switchis set for the proper voltage setting.

To reduce the chance of noise spikes entering the AC line and affecting theunit, the AC power should be relatively “clean” and within the specified±10% variation limit. Connecting power from heavily loaded circuits orcircuits that also power loads that cycle on and off, (contactors, relays,motors, etc.) should be avoided.

DC POWER WIRINGThe DC power is connected to the bottom left terminals 3 & 4 marked +12

VDC and common. The DC power source must be capable of supplying theunit’s rated current (250 mA) and be within the specified ±20% variationlimit. It is not necessary to provide battery backup to retain programmableinformation. The Legend has nonvolatile memory and information is storedon power down (Refer to block diagram).

SERIAL COMMUNICATIONSRefer to the RS485 Serial Communications section of the manual, for

wiring and operational procedures.

USER INPUT WIRING Programmable external user inputs are digital inputs that are active when

connected to TBC #3 Common. The use of shielded cable is recommended.Follow the EMC Installation Guidelines for shield connection.

OUTPUT WIRING RELAY CONNECTIONS

To prolong contact life and suppress electrical noise interference due to theswitching of inductive loads, it is good installation practice to install a snubberacross the contactor. Follow the manufacturer’s instructions for installation.Note: Snubber leakage current can cause some electro-mechanical devices

to be held ON.

SIGNAL WIRINGINPUTS A & B

Input A and Input B have the same input circuitry. Input A and Input B eachhave separate DIP switches for setting the type of signal input. A MagneticPickup or Logic Input signal can be sent to either input. When a MAGNETICPICKUP is used the Sink/Source DIP switch for the appropriate input, mustbe in the “SRC” position or the unit will not count. The HI/LO FRQ DIPswitch will effect the maximum input frequency at that input.

The Input schematic shows the details of Input A and Input B circuitry andshare the same common. Each input has three DIP switches associated with its input. The functions of these switches are as follows:

-38-

SIGNAL WIRING (Cont’d)

INPUTS A & B (Cont’d)

INPUT A

SW1 - MAG: Sets input for a Magnetic Pickup signal. Sensitivity: 200 mV peak; hysteresis: 100 mV.

Note: SW2 and SW5 must be in the “SRC” position for a Magnetic Pickup signal.

LOGIC: Sets input for a Logic signal. Input trigger levels: VIL=1.5 Vmax; VIH=3.75 Vmax.

SW2 - SNK: Provides a 7.8 K internal pull-up resistor for sensors withcurrent sinking outputs.

SRC: Provides a 3.9 K internal pull-down resistor for sensors withcurrent sourcing outputs.

SW3 - HI FRQ: Removes damping capacitor and allows operation up to themax. frequency.

LO FRQ: Connects damping capacitor for switch contact debounce.Limits count speed to 50 cps max. Min. count pulse ON or OFFtime - 10 msec.

Note: The HI/LO FRQ selection switch must be set on “LO FRQ” when switch contacts are used to generate count input signals. The “LO FRQ” modealso provides very high immunity against electrical noise pickup, it isrecommended that this mode also be used, whenever possible, withelectronic sensor outputs. The “LO FRQ” mode can be used with any typeof sensor output, provided count pulse widths never decrease below 10msec, and the count rate frequency does not exceed 50 cps.

INPUT B

SW4 - Same as SW1SW5 - Same as SW2SW6 - Same as SW3

Note: A Magnetic Pickup type sensor should not be used unless a largeenough signal is provided at all speeds of operation.

-39-

INSTALLATION & REMOVAL OF OPTIONAL RELAY BOARDTo install the relay board, locate the relay opening at the lower right-hand

corner, on the back of the Legend. Using a small screwdriver, inserted into the slot of the relay latch, bend the tab down while sliding the board into the twoslots in the housing. The relay board will seat into the unit, allowing the tab toreturn to its original position. To remove the relay board, pull down on the tabjust enough to allow the relay board to slide out. Grasp the terminal block andpull to remove the board.

DIP SWITCH SET-UPThe DIP switches are accessible through the side of the Legend. The DIP

switch positions and their functions are shown below:

-40-

-41-

VARIOUS SENSOR OUTPUT CONNECTIONS [See Note 1]

COUNT SWITCH OR ISOLATED TRANSISTOR OUTPUTS SENSORS WITH -EF SENSORS WITH CURRENT SINK SENSORS WITH CURRENT

CURRENT SOURCE CONNECTED CURRENT SINK CONNECTED OUTPUT-CURRENT SRC CONN. OPEN COLLECTOR (NPN O.C.) SOURCE OUTPUT (PNP O.C.) (COUNT ON OPENING) (COUNT ON CLOSING) (COUNT ON FALLING EDGE) (COUNT ON TURN-ON) (COUNT ON TURN-OFF)

2-WIRE PROXIMITY SENSORS MAGNETIC PICKUPS A.C. INPUTS FROM INVERTERS, INTERFACING WITH CMOS INTERFACING WITH TTL CURRENT SOURCE CONNECTED TACH. GENERATORS, ETC. CIRCUITRY (B TYPE) (COUNT ON CURRENT FALL)

* SEE

NOTE 2

* SEE

NOTE 2

* SEE

NOTE 2

SEE NOTE 4 FOR INPUT

VOLTAGES GREATER

THAN +12V.

RLC SENSOR MODELS: PR & RR PHOTO-ELECTRICS RLC SENSOR MODELS: LMP-EC RLC SENSOR MODELS: ASTC, LMPC, LSC, PSAC, RPGB, RPGC, RPGH

A.C. SIGNALS OVER 50VAC PEAKSHOULD BE ISOLATED BY A STEPDOWN TRANSFORMER.

NOTE: IF EXTERNAL SUPPLY IS USEDTO POWER CMOS CIRCUIT VOLTAGEMUST BE > DC OUT VOLTAGE.

NOTE: CIRCUIT SHOWN FOR STD. TTLOUTPUT. TTL CIRCUITS ARE AVAILABLEW/OPEN COLLECTOR OUTPUTSELIMINATING NEED FOR DIODE CLAMP.

* SEE

NOTE 2

NOTES:

1. SENSOR VOLTAGE AND CURRENTThe +12 VDC (in/out) terminal can supply voltage to a sensor within a±25% variation, due to line and internal load variations. All RLC sensorswill accommodate this variation.

2. HI/LO FRQ SELECTIONThe HI/LO FRQ selection switch must be set on “LO FRQ” when switchcontacts are used to generate count input signals. The “LO FRQ” mode also provides very high immunity against electrical noise pickup. It isrecommended that this mode also be used, whenever possible, withelectronic sensor outputs. The “LO FRQ” mode can be used with any typeof sensor output, provided count pulse widths never decrease below 10msec, and the count rate frequency does not exceed 50 cps.

3. When shielded cable is used, the shield should be connected to “COMM.”at the unit and left disconnected at the sensor end.

4. Inputs A and B can accept source pulses from other circuits up to +28 V inamplitude. For voltages above +28 V, a limiting resistor and zener diodeshould be used to limit the voltage at the input.

-42-

SPECIFICATIONS1. DISPLAY: 2x8, 0.3" (7 mm) high characters, negative image transmissive

LCD, with yellow/green or red LED backlighting.2. POWER:

AC Operation: 115/230 VAC ±10%, 50/60 Hz, 10 VA, switch selectable.DC Operation: +12 VDC ±20% @ 250 mA.

3. MEMORY: Non-volatile memory retains all programming information.Count and Preset values are written to non-volatile memory when power isinterrupted. All other programming parameters are written to memory whenprogramming mode is exited. If power is removed while in the programmingmenu’s, the parameters are restored to previously saved settings.Data Retention: 10 yrs. minimum.

4. SENSOR POWER: +12 VDC ±25% @ 100 mA.5. INPUTS A and B: DIP Switch selectable to accept count pulses from a

variety of sources including switch contacts, outputs from CMOS or TTLcircuits, and all standard RLC sensors.LOGIC: Input trigger levels VIL = 1.5 VMAX; VIH = 3.75 VMIN.

Current sinking: Internal 7.8 KΩ pulled up internally to +12 VDC ,IMAX = 1.9 mA.

Current sourcing: Internal 3.9 KΩ pull-down, 7.3 mA @ 28 VDCMAX.Debounce: Damping capacitor provided for switch contact bounce.

Limits count speed to 50 Hz and input pulse widths to 10 msecminimum.

MAGNETIC PICKUP:Sensitivity: 200 mV peak.Hysteresis: 100 mV. Input impedance: 3.9 KΩ @ 60 Hz.Maximum input voltage: 50 VpNote: For magnetic pickup input, the sink/source DIP switch must be in

the SRC position.6. RATE ACCURACY: +0.01%.7. RATE MINIMUM INPUT FREQUENCY: 0.01 Hz.8. MAXIMUM COUNT RATE IN KHz:

MODELCNT + DIR QUAD ADD/ADD ADD/SUBX1 X2 X1 X2 X4 X1* X1*

LGD (Dual Preset) 20 10 8.5 7 5 20 10

Notes:

1. Maximum count rates given are for Process counter set for Auto reset with

the auto cycle preset set to an equivalent of 100 count pulses or greater.

With auto cycle presets less than 100 count pulses, with Count SF = 0.5000

and Count Scale Multiplier = X1, would be 50.

2. Maximum count rate given for X2 & X4 count modes are given for 50%

duty cycle signals and Quad signals with 90º phase shift.

* - Inputs’ A & B count rates summed.

-43-

DIMENSIONS In inches (mm)

PANEL CUT-OUT

Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 3.0" (76.2)H x 4.0" (101.6)W.

9. CONTROL INPUTS:Programmable user inputs (3): Internal 10 KW pull-up to +5 VDC,VIL = 1.0 VMAX; VIH = 4.0 VMIN, response time = 10 msec max.Inhibit: Internal 10 KW pull-up to +5 VDC, VIL = 1.0 VMAX;VIH = 4.0 VMIN.

10. SERIAL COMMUNICATIONS:Type: RS485 Multi-point Balanced Interface.

(Can connect up to 32 units on a line.)Baud Rate: Programmable from 1200 to 9600.Maximum Addresses: Programmable from 00 to 99.

(Actual number on a line is limited by hardware specifications.)Transmit Delay: Programmable for 0.002 or 0.100 second.Data Format:

10 Bit Frame; 1 start bit, 7 data bits, 1 parity bit, and 1 stop bit.Parity is programmable for either ODD, EVEN, or No Parity.

11. OUTPUT(S):Solid-State: Current sinking NPN open collector transistor.VCE = 1 VSAT @ 100 mA maximum. VOH = 30 VDC maximum.(Internal Zener Diode Protection).Relay(s): Mounted on field-replaceable P.C. board. Form C contacts ratedat 5 amps @ 120 VAC/240 VAC or 28 VDC (resistive load), 1/8 H.P. @120 VAC (inductive load). The operate time is 5 msec nominal and therelease time is 3 msec nominal.Life Expectancy: 100,000 cycles at maximum load rating. (Decreasingload and/or increasing cycle time, increases life expectancy.)Programmable Timed Output(s): Programmable time ranges from 0.01to 99.99 seconds, ±0.05% - 11 msec. max.Count Boundary Output Response Time: 10 msec

12. ENVIRONMENTAL CONDITIONS:Operating Temperature: 0 to 50°CStorage Temperature: -40 to 70°COperating and Storage Humidity: 85% max. (non-condensing) from 0°C to 50°C.Vibration to IEC 68-2-6: Operational 5 to 150 Hz, 2 g.Shock to IEC 68-2-27: Operational 20 g (10 g relay).Altitude: Up to 2000 meters.

13. CONSTRUCTION: High impact plastic case with clear viewingwindow. The front panel meets NEMA 4X/IP65 requirements for indooruse when properly installed. Installation Category II, Pollution Degree 2.Panel gasket and mounting clips included.

14. WEIGHT: 1.5 lbs. (0.68 Kg)

-44-

-45-

TROUBLESHOOTING GUIDE

For further technical assistance, contact technical support at the appropriate company numbers listed.

PROBLEMS POSSIBLE CAUSE REMEDIESNO DISPLAY 1. Power off 1. Verify power.

2. Improperly wired 2. Check wiring.3. Voltage selector switch in the wrong position. 3. Check switch position.4. Power in a Brown out condition. 4. Verify voltage reading.5. If powered by +12 VDC source, not enough current

to drive Legend unit.5. Verify Source current rating.

CHECKSUMERROR 1 OR 2 ON DISPLAY

1. Data error detected by processor. 1. Press “ENT” key.a. Check all programming parameters.

2. Check signal lines for possible noise sources.UNIT DOES NOT COUNT 1. No input signal. 1. Check sensor connections.

a. Verify power to sensor.2. Type of input signal incorrectly selected. 2. Check DIP switch setting on side of unit.3. Count inhibited. 3. Disable count inhibit.4. Scale factor and/or multiplier value too small. 4. Check scale factor value and scale multiplier

values.UNIT WILL NOT ACCEPT THE DESIREDPRESET

1. When a count scale factor greater than 1 is used, the preset value must be evenly divisible by the scale factor.

1. Unit automatically adjusts preset to be evenlydivisible by the scale factor.

UNIT COUNTS INCORRECTLY 1. Input signal type incorrectly selected. 1. Check DIP switches. Set HI/LO FRQ. switch to LO for a count speed of less than 50 Hz.

2. Inputs improperly connected. 2. Check sensor input connections.3. Electrical noise interference. 3. Check power source for noise.

a. Check signal wire routing.4. Incorrect counting mode. 4. Verify programming in “Program Cntr Module”.5. Scale factor incorrect. 5. Verify scale factor value.

-46-

TROUBLESHOOTING GUIDE (Cont’d)

PROBLEMS POSSIBLE CAUSE REMEDIESCOUNT, PEAK, OR VALLEY VALUES WILLNOT RESET WHEN A MANUAL RESET ISPERFORMED

1. User input NOT properly programmed. 1. Verify programming in “Program User Module”.

CANNOT ENTER INTO PROGRAMMINGMENUS

1. Front panel disabled. 1. Check “Front Panel Accessible Functions WithProgram Disable” section in manual.

PRESETS, COUNTER LOAD, OR SCALEFACTORS CAN BE VIEWED BUT NOTCHANGED

1. Front panel disabled. 1. Verify programming in “Program Options Module” sub-menu Operator Access.

2. Check “Front Panel Accessible Functions WithProgram Disable” section of manual.

UNIT COUNTS WHILE RESET IS ACTIVATED 1. User input Reset mode set for Momentary reset. 1. Program User input to a Maintained reset. OUTPUT WILL NOT RESET 1. Output assigned to wrong display (Count or Rate). 1 . Verify programming in “Program Outputs

Module”.2. Reset with count disabled (Program Outputs

Module).2 . Verify programming in “Program Outputs

Module”.3. User input NOT properly programmed. 3. Verify programming in “Program User Module”.

NO RATE INDICATION 1. No signal at input A. 1. Check sensor connections. a. Verify power to sensor.

2. Type of input signal selected incorrectly. 2. Check DIP switch setting on side of unit. 3. Rate Scale factor and/or Rate Scale Multiplier too

small.3. Check scale factor value and scale multiplier

values.

-47-

TROUBLESHOOTING GUIDE (Cont’d)

PROBLEMS POSSIBLE CAUSE REMEDIESINCORRECT RATE READING 1. Input signal type incorrectly selected. 1. Check DIP switches. Set HI/LO FRQ. switch to LO

for a count speed of less than 50 Hz.2. Inputs improperly connected. 2. Check sensor input connections.3. Electrical noise interference. 3. Check power source for noise.

a. Check signal wire routing.4. Scale factor incorrect. 4. Verify scale factor value.5. Rate input signal too high of a frequency. 5. Verify input signal.

RATE DISPLAY FLASHING OVERFLOW 1. Rate Scale Factor, Multiplier and/or ConversionFactor values too large.

1. Check values.

APPENDIX “A” - SCALING FOR COUNT INDICATIONThe Legend is factory set to provide 1 count on the display for each pulse

that is input to the unit. In many applications, there will not be a one to onecorrespondence between input pulses and display units. In these applicationsit will be necessary for the Legend to scale or multiply the input pulses by ascaling factor to achieve the proper display units desired (feet, meters,gallons, etc.). There are three different parameters used in scaling the inputpulses to the desired reading. They are: the “Count Scale Factor”, the“Counter Scale Multiplier”, and the “Number of Count Edges”. The numberof count edges is determined in the Program Counter Module. For example,the number of edges for the “CNT+DIRX1” mode is one and the “QUAD X4”mode is four. All three are factored together to provide the Total Scaling thatis necessary. The Count Scale Factor and Scale Multiplier are programmed inthe Program Scaling section.

The first step in scaling the counter requires that the “Number of Pulses”per “Display Unit(s)” needs to be obtained. This may require a small amountof deductive reasoning.

Example: A 48-tooth gear is mounted to a 2 ft circumference feed roll in apaper processing plant. It is desired to totalize the total footage of paperprocessed. In this example, the display units will be in feet. A sensor sensingthe gear teeth will provide 48 pulses for each revolution of the feed roll. Eachrevolution will equate to a linear distance of 2 feet. The number of “DisplayUnits” desired will be 2. The “Number of Pulses” per “Display Units” will be48. When the number of “Display Units” and the “Number of Pulses” havebeen obtained, the Total Scaling Factor can be calculated.

The “Total Scaling Factor”, denoted as “KT”, is simply the total amount ofscaling required. It is obtained by dividing the “Display Units” by the“Number of Pulses” as shown in Formula #1 below.

FORMULA #1: KT = Display Units ÷ Number of Pulses

WHERE: KT = Total Scaling Factor.

Display Units = The number of desired units (revolutions, feet, 10ths of feet, meters, etc.) that would be acquired after the “Number of Pulses” has occurred.Number of Pulses = The Number of pulses required to achieve the number of “Display Units”.

For the preceding example, the Total Scaling Factor, “KT”, is calculated byplugging in 2 and 48 in the formula:

KT = 2 ÷ 48 = 0.041667

As previously stated, the Total Scaling Factor, “KT”, is the combination ofthe Scale Factor, Scale Multiplier, and Number of Count edges. In manyapplications the Total Scale Factor, “KT”, can be programmed directly intothe Count Scale Factor, “SF”, in which case the Scale Multiplier and Numberof Count Edges can be left at the factory settings of X1.

In some applications, more display resolution may be required. When theTotal Scaling Factor (KT) is greater than 1.0000 and using only one edge percount pulse, there may not be enough display resolution.

Example: With a Total Scaling Factor of 2.000, when an input pulse isgenerated, the display will increment by 2. If the display units are in feet,when 3 feet have gone by, the display will still only read 2. It will notincrement again until 4 feet have been accumulated. With this amount ofdisplay resolution it would be impossible to set the Preset and have the outputrespond at odd feet intervals (1, 3, 5, etc.). To increase resolution, the Number of Count edges must be increased. This can be achieved by selecting theCT+DIRX2 mode (Count plus direction times 2) in the Program CountModule or by selecting the QUAD X4 mode, if quadrature counting is beingused. If enough resolution still has not been attained, more input pulses willneed to be generated per display unit.

The amount of resolution required will vary depending on the particularapplication. In cut-to-length applications, a high amount of resolution isoften necessary. However, in totalizing applications, display resolution maynot be important. It should be noted that whenever the number of count edgesis increased to 2 or 4, the maximum count frequency will decrease. (SeeSpecifications for maximum count frequency).

Note: When using 2 or 4 edge counting for length sensor, on/off duty cyclemust be 50% to maintain max. accuracy (mag. pickup will not work).

-48-

Once the Number of Count Edges (NCE) to be used has been determined,the Remaining Scaling factor required, “KR”, can be calculated. This is theTotal Scaling Factor, “KT”, divided by the Number of Count edges used asshown in Formula #2:

FORMULA #2: KR = KT ÷ NCE

WHERE:KR = Remaining Scaling Factor.KT = Total Scaling Factor.NCE = Number of Count Edges.

In our original example, the Total Scaling Factor, “KT” was determined tobe 0.041667. Since this value is less than one, sufficient pulse information isbeing generated, i.e., there is enough resolution for the units selected. TheNumber of Count edges can be left at the factory set value of X1. The TotalScaling Factor, “KT”, therefore equals the Remaining Scaling Factor, “KR”.

KR = 0.041667 ÷ 1 = 0.041667

If the remaining scaling is between 0.6000 and 5.9999, it can beprogrammed directly into the Scale Factor value and the X1 factory settingfor the Count Scale Multiplier “SCM”, can be used.

COUNT SCALE MULTIPLIER

The general rule for choosing an SCM value is, when the RemainingScaling Factor, “KR”, is less than 0.6000, an SCM value of 0.1 or 0.01 can beused to get a Scale Factor value between 0.6 and 5.9999 or to the point wherethe maximum number of significant digits is obtained.

FORMULA #3: SF = KR ÷ SCM

WHERE:SF = Count Scale Factor.KR = Remaining Scaling Factor.SCM = Count Scale Multiplier.

Following our continuing example, it is easy to see that the RemainingScaling Factor, “KR” (0.041667), cannot fit into the Scale Factor Valuewithout losing significant digits. Using the Formula above and a ScaleMultiplier value of 0.01 will allow us to get the maximum number ofsignificant digits possible for the Count Scale Factor value:

SF = KR ÷ SCM = 0.041667 ÷ 0.01 = 4.1667

COUNTER SCALING EXAMPLE:

EXAMPLE #1:A flow sensor provides 62 pulses per gallon. Calculate the scaling required

to provide a display reading in gallons. The number of “Display Units”displayed after 62 pulses have been counted should be 1.

STEP 1 - Calculate the Total Scaling Factor, “KT”, using Formula #1.

FORMULA #1:KT = Display Units ÷ Number of Pulses = 1 ÷ 62 = 0.016129

STEP 2 - In this application 62 pulses per gallon provides more than enoughresolution, so the “Number of Count Edges” (Selected in the ProgramCounter Module) is set to a value of X1. With an “NCE” value of 1, theremaining scaling factor required is still 0.016129.

FORMULA #2:KR = KT ÷ NCE = 0.016129 ÷ 1 = 0.016129

STEP 3 - To provide maximum scaling accuracy, a “Scale Multiplier” valueis chosen that will give the maximum amount of significant digits in theScale Factor. A value of 0.01 will result in a Scale Factor Value of 1.6129.

FORMULA #3:SF = KR ÷ SCM = 0.016129 ÷ 0.01 = 1.6129

-49-

COUNTER SCALING EXAMPLE:

EXAMPLE #2:A quadrature Rotary Pulse Generator that provides 100 pulses per

revolution is coupled to a feed roll that is 2.5 feet in circumference. It is desiredto read in feet with display resolution to the nearest hundredth of feet (0.01).

In this application, the requirement is for the display to read in hundredthsof a foot. A 2.5 ft. distance will equate to 250 “Display Units” (hundredths).The “Number of Pulses” for 2.5 ft. is 100, as stated.

From the information obtained, the Total Scaling Factor, “KT”, can becalculated, using Formula #1.

KT = Display Units ÷ Number of Pulses = 250 ÷ 100 = 2.5

With a Total Scaling Factor, “KT”, of 2.5, it can easily be seen that for everypulse that is input, the display will increment by 2.5 display units (hundredths).The application requires resolution to the nearest hundredth of a foot. To gethigher resolution, Quadrature x4 Input Response Mode is selected. This willprovide four times the resolution. Using Formula #2, and 4 for the “Number ofCount Edges”, the Remaining Scaling, “KR”, is calculated.

KR = KT ÷ Number of Count Edges = 2.5 ÷ 4 = 0.625

At this point, it can be seen that the Remaining Scaling Factor value of0.625 will fit into the Scale Factor value range without losing any significantdigits or scaling it any further. Because of this, the Scale Multiplier (SCM)factory set value of X1 is used, and 0.6250 is programmed directly in for theScale Factor, “SF”.

SF = KR ÷ SCM = 0.6250 ÷ 1 = 0.6250

-50-

APPENDIX “B” - SCALING FOR RATE INDICATIONThe Legend offers a simplified method for scaling the rate portion of the

indicator. The method does not require time unit conversions. The desiredtime format (Rate Per Second, Rate Per Minute, Rate Per Hour) is simplyselected as part of the programming procedure.

Due to the way the rate is calculated (See “General Description” section),high resolution and accuracy can be realized at all input rates, slow or fast.

Note: It is not necessary to increase the pulse information to obtain higherresolution.

The Rate Minimum Update Time can be programmed from 0.1 up to 99.9seconds to provide averaging in applications where the input pulse spacing isnot stable. The Update time selected, however, will not affect the scaling inany manner.

Scaling the Rate channel involves programming the Legend so that inputpulses to the unit will be scaled to the desired display units (revolutions, feet,meters, etc.) and in the desired time format (Rate Per Second, Rate perMinute, Rate Per Hour).

If the rate indicator is to display the rate at which the counter is counting.The rate indicator can be programmed with the same scaling parameters as the counter. The only other requirement is that the desired “Rate ConversionFactor” be selected to provide the rate display in the desired time format, Rateper Second (X1), Rate per Minute (X60), or Rate per Hour (X3600). This willautomatically scale the rate by X1 (1 pulse per second), X60 (60 pulses perminute), or X3600 (3600 pulses per hour).

Note: The rate uses only the negative edge of the pulse at Input A. The counteruses both edges of the input pulse for X2 or X4 count mode. The rate can showthe same reading as the count, but take into account the counter mode selected.

If the rate application is to display a specific Display Unit, then to scale therate, it is only necessary to know the number of pulses per display unit desiredor units (feet, revolutions, etc.).

Example: A 48-tooth gear, which is coupled to a shaft, is being sensed andit is desired to indicate the shaft speed in revolutions, the display units will bein revolutions. It is obvious that 48 pulses will occur in one revolution.

To convert the pulse units to revolutions, it is necessary for the Legend tomultiply the number of pulses by a scaling factor to convert the pulse units torevolution units. The Legend has a Rate Scale Factor and a Rate Scale

Multiplier to scale pulse units to the desired display units. They areprogrammed in the Program Scaling section. Both are used to attain the TotalScaling Factor, “KT” To calculate the Total Scaling Factor, “KT”, for theapplication, the following formula is used.

FORMULA #1: KT = Display units ÷ Number of pulses

WHERE: KT = Total Scaling Factor. Display Units = The number of desired units (revolutions, feet, 10ths of feet, meters, etc.) that would be acquired after the “Number of Pulses” has occurred. Number Of Pulses = The Number of pulses required to achieve the number of “Display Units”.

Using the example previously discussed, the desired display unit would be1 revolution and the number of pulses per display unit would be 48.Therefore, the Total Scale Factor would be 0.020833.

KT = 1 rev ÷ 48 pulses per rev = 0.020833

In many applications the Total Scale Factor, “KT”, can be programmeddirectly into the Rate Scale Factor, “SF”, in which case the Scale Multiplier“SCM” can be left at the factory setting of X1. However, in someapplications, such as the one above, it may be desired to obtain moresignificant digits in the Scale Factor, “SF”.

These situations occur when the “KT” factor does not calculate to an evennumber that will fit into the four decimal places available to the Scale Factor.The following formula can be used to calculate the Scale Factor when an SCM value other than X1 is needed.

FORMULA #2: SF = KT ÷ SCM

WHERE:SF = Rate Scale Factor.KT = Total Scaling Factor.SCM = Rate Scale Multiplier.

In this formula, the Total Scaling Factor, previously calculated, is dividedby the Scale Multiplier Value, “SCM”, to obtain the Scale Factor, “SF”.

-51-

RATE SCALE MULTIPLIERThe general rule for choosing an SCM value is, when the Total Scale

Factor, “KT”, is less than 0.6000, an SCM value of 0.1 or 0.01 can be used toget a Scale Factor value between 0.6 and 5.9999, or to the point where themaximum number of significant digits is obtained. If the Total ScalingFactor, “KT”, is greater than 5.9999, then an SCM value of 10, 100, or 1000can be used to obtain a Scale Factor Value between 0.6 and 5.9999.

In our initial example, the Total Scaling Factor, “KT” was determined to be 0.020833. It is easy to see that this number cannot be programmed into theScale Factor, “SF”, without losing significant digits. Using formula #2 andthe general rules stated above, a Scale Multiplier Value of 0.01 is chosen andthe Scale Factor is calculated as shown below. This will provide maximumamount of conversion accuracy possible.

SF = KT ÷ SCM = 0.020833 ÷ 0.01 = 2.0833

In situations where the Total Scale Factor is already in range of the ScaleFactor (0.0001 to 5.9999) and when there are no significant digits that are lost,the Total Scaling Factor, “KT”, can be programmed directly into the Scale FactorValue and a Scale Multiplier value of X1 (the factory set value) can be used.

Example: If the desired display units are in feet and there are 100 pulses per foot, the Total Scaling Factor,"KT“, would be 0.01.

KT = Display units ÷ number of pulses = 1 ÷ 100 = 0.01

Since the Total Scaling Factor, “KT”, is exactly 0.01, it can be programmedinto the Scale Factor Value, “SF”, and the Scale Multiplier Value, “SCM”,can be left at its factory setting of X1.

After the Scale Factor and Scale Multiplier values are selected, all that isnecessary to complete the scaling is to choose the Rate Conversion Factor.The Rate Conversion Factor (RCF) can be selected to provide indication inRate per Second (X1), Rate Per Minute (X60), or Rate per Hour (X3600).

There may be situations where there are many more pulses per display unitthan needed. In these situations the minimum SCM value (0.01) may notprovide enough significant digits in the Scale Factor. To achieve moresignificant digits, the Rate Conversion Factor should be set to Rate perSecond and the following formula be used.

SF = KT x RCF ÷ SCM

WHERE:RCF = 60 for display reading in Rate Per Minute or 3600 for display

reading in Rate Per Hour

RATE SCALING EXAMPLE:

EXAMPLE #1:A 60-tooth gear is mounted to a roll that has a circumference of 2 feet. It is

desired to have a rate readout with a resolution in 10ths of feet per minute.Calculate the Scale Factor and Scale Multiplier values necessary to providethe desired readout.

In this example one revolution of the web will provide 60 pulses for 2 feetof linear travel. Since the desired display units are to be in tenths of feet, it isnecessary to convert 2 feet to tenths (2 ÷ 0.1 = 20), giving us 20 tenths (display units). The Total Scaling Factor, “KT”, is calculated by simply plugging in the two numbers into Formula #1.

KT = Display Units ÷ Number of Pulses = 20 ÷ 60 = 0.333333

To get the maximum number of significant digits in the Scale Factor we use formula #2 and a Scale Multiplier value of 0.1 as shown below.

SF = KT ÷ SCM = 0.333333 ÷ 0.1 = 3.3333

To obtain rate indication in Feet Per Minute, the Rate Conversion Factor isprogrammed for the Rate per Minute mode. A decimal point is programmed to 0.0, which allows the unit to display in 10ths of feet.

-52-

RATE SCALING EXAMPLE (Cont’d):

EXAMPLE #2:The shaft of a positive displacement pump has a 14 tooth sprocket that is

being sensed by a magnetic pickup. It is known that the unit pumps 810 litersof water per minute, when the shaft is turning 400 RPM. It is desired to have adisplay readout in liters per minute.

With the Legend, it is not necessary to deal with time unit conversions. Fromthe information given, we know that when the shaft has turned 400 revolutions,810 liters of water will have been pumped. The first step we need to take is tocalculate the number of pulses that occur when 810 liters have been pumped.

Number of Pulses = # of Rev x Pulses per Rev = 400 Rev x 14 PPR = 5600 pulses.

We now have all the information necessary to scale the rate. The TotalScaling Factor, “KT”, is calculated using Formula #1 as shown below.

KT = Display Units ÷ Number of Pulses = 810 ÷ 5600 = 0.144643

It is noticed that there are more significant digits in the Total Scale Factor,“KT”, than there are available for the Scale Factor, “SF”. To acquire themaximum amount of significant digits for the Scale Factor, Formula #2 isused and a Scale Multiplier value of 0.1 is selected.

SF = KT ÷ SCM = 0.144643 ÷ 0.1 = 1.4464

The Scale Factor, “SF”, equals 1.4464 (1.44643 rounded to 4 decimalplaces). This provides the maximum amount of conversion accuracy possible.

The final step is to select a Rate Conversion Factor. The Rate ConversionFactor is chosen to be Rate Per Minute as was required.

-53-

-54-

APPENDIX “C” - APPLICATIONS

DUAL PRESET COUNTING APPLICATION

A typical industrial application for a Legend unitrequires both a slow down output and a final stopoutput. The Legend can be easily programmed to solvethis requirement. For instance, a textile web processrequires a dual output as the web progresses to theproper length. A typical length of material for thisapplication is a 10,000 foot length. In this case, itwould be best to set the unit up for Manual Reset withPreset tracking. Preset 2 is set at 10000 and Preset 1 setfor 9500. The counter causes the process to slow downuntil 10,000 (preset 2) is reached at which point Output2 would activate and latch for final stop. The advantage of using Preset tracking is that when changing the totallength it is only necessary to change Preset 2 (length).Preset 1 (s low down) wil l maintain the samedifferential (500), assuming the same amount of slowdown is required. In the program counter module, thecontinue mode is programmed for count with directionx1 (CT=DIRx1) with input B disconnected so the unitwill count in a positive direction. The reset action mode is set for reset to preset 2 and the automatic reset modeis disabled. In the program options module the presettracking is enabled. User input function key F1 is set toreset the count display and user input 1 is programmedto set output 2 in case of an emergency stop. Outputsone and two are assigned to the count display for latchmode, and the reset with count is enabled.

The accompanying drawing shows an PSAC sensinga 60 tooth gear which is at tached to a 2.5 ft .Circumference drum. Since the unit of measure is a foot,the first step is to find the number of pulses per foot thatwill be used.

The following formula is used.

Pulses/ft. = 60 pulses/rev. = 24 pulses/ft. 2.5 ft./rev.

Since the desired readout is in feet, and there are24 pulses per foot, it is necessary to scale the count.To determine the multiplier that is needed, theformula below is used.

KT = Desired Display Units = 1 ÷ 24 = 0.041667 Number of Pulses

The remaining scale factor (KR) required isdetermined by dividing the total scaling factor (KT) by the number of count edges. (NCE).

KR = KT ÷ NCE = 0.0416667 ÷ 1 = 0.0416667

The general rule for choosing a count scalemultiplier (SCM) is used to get the maximumamount of decimal point accuracy. A Count ScaleMultiplier of 0.01 is used, which would give a scalefactor (rounded off) of 4.1667.

SF = KR ÷ SCM = 0.0416667 ÷ 0.01 = 4.1667

If we used the count multiplier as the scalefactor, and used a scale multiplier of 1, the scalefactor would round off to 0.0417, in which case 2decimal places of accuracy would be lost.

-55-

APPENDIX “C” - APPLICATIONS (Cont’d)

TYPICAL COUNTER/RATE APPLICATIONCOAL FEED RATE & USAGE INDICATION

An industrial plant has an in-house coal fired boilerthat provides heating and powers an electric generatorused for secondary power. An auger feeds the coal intothe boiler furnace. The actual pressure of the boiler iscontrolled by the feed rate of the auger. An indication isrequired when the feed rate falls below or exceeds thedesired RPM levels. The plant manager also wants anindication of the amount of coal that is used. The desiredauger revolution rate is between 25 and 35 RPM. A shaftrotation speed of 30 RPM is equal to a feed rate of 1.8tons of coal per hour. Rate and usage indication is to be in 10ths of tons per hour.

An PSAC can be used to sense a bolt head located onthe auger shaft. The count with direction x1 (CT =DIRx1) is programmed in the program counter modulewith input B left open to the unit counts in a positivedirection. The reset action mode is set to reset to zero and the automatic reset is disabled. First the scaling requiredfor the counter is calculated.

The number of pulses must be calculated:

Number of pulses = # of rev x pulses per rev = 1 x 30 = 30 pulses/min (PPM)

Per hour = x time = 30 x 60 = 1800 PPHThe total scaling factor is calculated by the following

formula:

KT = Desired display units ÷ number of pulses = 18 ÷ 1800 = 0.01

The Count Scale Factor (SF) is calculated using thefollowing formula and the scale multiplier is chosen using the general rule (reference scaling for count indication):

SF = KT ÷ SCM = 0.01 ÷ 0.1 = 0.1

The decimal point location for the countdisplay is programmed for 0.0.

At 30 RPM the pulse rate per minute is the same since a single bolthead is being sensed once eachrevolution. Since it takes one hour at 30 RPM touse 1.8 tons of coal , the number of pulsesaccumulated in that hour will be 1800 (30 PPM x60 min/hr = 1800). The Scale Factor needed is0.01 (SF = desired reading/# of pulses = 18/1800= 0.01). The rate display is to indicate RPMs witha resolution in tenths, The total scaling factor iscalculated by the following formula:

KT = Desired display units ÷ number of pulses = 300 RPM ÷ 30 = 10

The Rate Scale Factor (SF) is calculated usingthe following formula and the scale mutiplier ischosen using the general rule (reference scalingfor count indication):

SF = KT ÷ SCM = 10 ÷ 10 = 1

It is then only necessary to program the RateConversion Factor for Rate per Minute. Since theapplication requires two presets for the upper andlower limits, the outputs are programmed to theRate display. Both outputs are programmed forboundary operation and output 1 is programmedfor “-” phase. The relay outputs are connected tooverspeed and underspeed indicator lights.

-56-

APPENDIX “D” - ORDERING INFORMATION

MODEL NO. DESCRIPTIONOPTION W/RELAY

BOARDPART NUMBERS

115/230VAC & +12VDC

LGD

Dual Preset Legend w/Yel-Grn Backlighting NO LGD00001YES LGD00000

Dual Preset Legend w/Red Backlighting NO LGD00101YES LGD00100

Dual Relay Board RLYLG002

APPENDIX “E” - FLOWCHART FOLD-OUT (Insert)

LIMITED WARRANTYThe Company warrants the products it manufactures against defects in materials and

workmanship for a period limited to two years from the date of shipment, provided the products have been stored, handled, installed, and used under proper conditions. The Company’s liability under this limited warranty shall extend only to the repair or replacement of a defective product, at The Company’s option. The Company disclaims all liability for any affirmation, promise or representation with respect to the products.

The customer agrees to hold Red Lion Controls harmless from, defend, and indemnify RLC against damages, claims, and expenses arising out of subsequent sales of RLC products or products containing components manufactured by RLC and based upon personal injuries, deaths, property damage, lost profits, and other matters which Buyer, its employees, or sub-contractors are or may be to any extent liable, including without limitation penalties imposed by the Consumer Product Safety Act (P.L. 92-573) and liability imposed upon any person pursuant to the Magnuson-Moss Warranty Act (P.L. 93-637), as now in effect or as amended hereafter.

No warranties expressed or implied are created with respect to The Company’s products except those expressly contained herein. The Customer acknowledges the disclaimers and limitations contained and relies on no other warranties or affirmations.

LGD/IM - L 05/14DRAWING NO. LP0241

Red Lion ControlsHeadquarters20 Willow Springs CircleYork PA 17406Tel +1 (717) 767-6511Fax +1 (717) 764-0839

Red Lion ControlsChina

Unit 302, XinAn PlazaBuilding 13, No.99 Tianzhou Road

ShangHai, P.R. China 200223Tel +86 21 6113 3688Fax +86 21 6113 3683

Red Lion ControlsEurope

Softwareweg 9NL - 3821 BN AmersfoortTel +31 (0) 334 723 225Fax +31 (0) 334 893 793

Red Lion ControlsIndia

201-B, 2nd Floor, Park CentraOpp 32 Mile Stone, Sector-30

Gurgaon-122002 Haryana, IndiaTel +91 984 487 0503